51042465445 has 16 divisors (see below), whose sum is σ = 61908487920. Its totient is φ = 40396288000.

The previous prime is 51042465443. The next prime is 51042465457. The reversal of 51042465445 is 54456424015.

It can be written as a sum of positive squares in 8 ways, for example, as 12374782564 + 38667682881 = 111242^2 + 196641^2 .

It is not a de Polignac number, because 51042465445 - 2¹ = 51042465443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51042465398 and 51042465407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51042465443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 579525 + ... + 661765.

It is an arithmetic number, because the mean of its divisors is an integer number (3869280495).

Almost surely, 2^51042465445 is an apocalyptic number.

It is an amenable number.

51042465445 is a deficient number, since it is larger than the sum of its proper divisors (10866022475).

51042465445 is a wasteful number, since it uses less digits than its factorization.

51042465445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83576.

The product of its (nonzero) digits is 384000, while the sum is 40.

The spelling of 51042465445 in words is "fifty-one billion, forty-two million, four hundred sixty-five thousand, four hundred forty-five".