51570150561 has 48 divisors (see below), whose sum is σ = 78522256384. Its totient is φ = 32572979712.

The previous prime is 51570150439. The next prime is 51570150581. The reversal of 51570150561 is 16505107515.

It is a happy number.

51570150561 is a `hidden beast` number, since 5 + 15 + 70 + 15 + 0 + 561 = 666.

It is not a de Polignac number, because 51570150561 - 2²² = 51565956257 is a prime.

It is a super-2 number, since 2×51570150561² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51570150581) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4820160 + ... + 4830846.

Almost surely, 2^51570150561 is an apocalyptic number.

It is an amenable number.

51570150561 is a deficient number, since it is larger than the sum of its proper divisors (26952105823).

51570150561 is a wasteful number, since it uses less digits than its factorization.

51570150561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11110 (or 11107 counting only the distinct ones).

The product of its (nonzero) digits is 26250, while the sum is 36.

The spelling of 51570150561 in words is "fifty-one billion, five hundred seventy million, one hundred fifty thousand, five hundred sixty-one".