51445356311245 has 64 divisors (see below), whose sum is σ = 68025403514880. Its totient is φ = 37120420124928.

The previous prime is 51445356311231. The next prime is 51445356311263. The reversal of 51445356311245 is 54211365354415.

It is a cyclic number.

It is not a de Polignac number, because 51445356311245 - 2⁷ = 51445356311117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 350326446 + ... + 350473264.

It is an arithmetic number, because the mean of its divisors is an integer number (1062896929920).

Almost surely, 2^{51445356311245} is an apocalyptic number.

It is an amenable number.

51445356311245 is a deficient number, since it is larger than the sum of its proper divisors (16580047203635).

51445356311245 is a wasteful number, since it uses less digits than its factorization.

51445356311245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147634.

The product of its digits is 4320000, while the sum is 49.

The spelling of 51445356311245 in words is "fifty-one trillion, four hundred forty-five billion, three hundred fifty-six million, three hundred eleven thousand, two hundred forty-five".