101815889402 has 16 divisors (see below), whose sum is σ = 157998716640. Its totient is φ = 49149840432.

The previous prime is 101815889387. The next prime is 101815889411. The reversal of 101815889402 is 204988518101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1424573 + ... + 1494335.

It is an arithmetic number, because the mean of its divisors is an integer number (9874919790).

Almost surely, 2^101815889402 is an apocalyptic number.

101815889402 is a deficient number, since it is larger than the sum of its proper divisors (56182827238).

101815889402 is a wasteful number, since it uses less digits than its factorization.

101815889402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94957.

The product of its (nonzero) digits is 184320, while the sum is 47.

The spelling of 101815889402 in words is "one hundred one billion, eight hundred fifteen million, eight hundred eighty-nine thousand, four hundred two".