51155617059 has 24 divisors (see below), whose sum is σ = 75681194160. Its totient is φ = 33279204672.

The previous prime is 51155617039. The next prime is 51155617087. The reversal of 51155617059 is 95071655115.

51155617059 is a `hidden beast` number, since 5 + 1 + 15 + 561 + 70 + 5 + 9 = 666.

51155617059 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51155617059 - 2¹⁶ = 51155551523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51155617039) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 351877 + ... + 475529.

It is an arithmetic number, because the mean of its divisors is an integer number (3153383090).

Almost surely, 2^51155617059 is an apocalyptic number.

51155617059 is a deficient number, since it is larger than the sum of its proper divisors (24525577101).

51155617059 is a wasteful number, since it uses less digits than its factorization.

51155617059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124771 (or 124768 counting only the distinct ones).

The product of its (nonzero) digits is 236250, while the sum is 45.

The spelling of 51155617059 in words is "fifty-one billion, one hundred fifty-five million, six hundred seventeen thousand, fifty-nine".