51602054465 has 8 divisors (see below), whose sum is σ = 66685732008. Its totient is φ = 38106132480.

The previous prime is 51602054461. The next prime is 51602054489. The reversal of 51602054465 is 56445020615.

It can be written as a sum of positive squares in 4 ways, for example, as 3143957041 + 48458097424 = 56071^2 + 220132^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51602054465 - 2² = 51602054461 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51602054461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396938816 + ... + 396938945.

It is an arithmetic number, because the mean of its divisors is an integer number (8335716501).

Almost surely, 2^51602054465 is an apocalyptic number.

It is an amenable number.

51602054465 is a deficient number, since it is larger than the sum of its proper divisors (15083677543).

51602054465 is a wasteful number, since it uses less digits than its factorization.

51602054465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793877779.

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 51602054465 in words is "fifty-one billion, six hundred two million, fifty-four thousand, four hundred sixty-five".