51506320770 has 64 divisors (see below), whose sum is σ = 137462832000. Its totient is φ = 13723754688.

The previous prime is 51506320711. The next prime is 51506320771. The reversal of 51506320770 is 7702360515.

51506320770 is a `hidden beast` number, since 5 + 15 + 0 + 632 + 0 + 7 + 7 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (51506320771) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 254221 + ... + 409439.

It is an arithmetic number, because the mean of its divisors is an integer number (2147856750).

Almost surely, 2^51506320770 is an apocalyptic number.

51506320770 is an abundant number, since it is smaller than the sum of its proper divisors (85956511230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51506320770 is a wasteful number, since it uses less digits than its factorization.

51506320770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156464 (or 156458 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 36.

The spelling of 51506320770 in words is "fifty-one billion, five hundred six million, three hundred twenty thousand, seven hundred seventy".