97780197703 has 4 divisors (see below), whose sum is σ = 97781630968. Its totient is φ = 97778764440.

The previous prime is 97780197679. The next prime is 97780197707. The reversal of 97780197703 is 30779108779.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30779108779 = 337 ⋅91332667.

It is a cyclic number.

It is not a de Polignac number, because 97780197703 - 2⁹ = 97780197191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97780197707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 608901 + ... + 752542.

It is an arithmetic number, because the mean of its divisors is an integer number (24445407742).

Almost surely, 2^97780197703 is an apocalyptic number.

97780197703 is a deficient number, since it is larger than the sum of its proper divisors (1433265).

97780197703 is a wasteful number, since it uses less digits than its factorization.

97780197703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433264.

The product of its (nonzero) digits is 4667544, while the sum is 58.

The spelling of 97780197703 in words is "ninety-seven billion, seven hundred eighty million, one hundred ninety-seven thousand, seven hundred three".