51705265072 has 40 divisors (see below), whose sum is σ = 100861044480. Its totient is φ = 25677192000.

The previous prime is 51705265057. The next prime is 51705265091. The reversal of 51705265072 is 27056250715.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1423813 + ... + 1459675.

It is an arithmetic number, because the mean of its divisors is an integer number (2521526112).

Almost surely, 2^51705265072 is an apocalyptic number.

It is an amenable number.

51705265072 is a deficient number, since it is larger than the sum of its proper divisors (49155779408).

51705265072 is a wasteful number, since it uses less digits than its factorization.

51705265072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36481 (or 36475 counting only the distinct ones).

The product of its (nonzero) digits is 147000, while the sum is 40.

The spelling of 51705265072 in words is "fifty-one billion, seven hundred five million, two hundred sixty-five thousand, seventy-two".