51015521155042 has 16 divisors (see below), whose sum is σ = 79212405297600. Its totient is φ = 24612505827280.

The previous prime is 51015521155037. The next prime is 51015521155051. The reversal of 51015521155042 is 24055112551015.

It is a junction number, because it is equal to n+sod(n) for n = 51015521154992 and 51015521155010.

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, 279850942 + ... + 280033177.

It is an arithmetic number, because the mean of its divisors is an integer number (4950775331100).

Almost surely, 2^{51015521155042} is an apocalyptic number.

51015521155042 is a deficient number, since it is larger than the sum of its proper divisors (28196884142558).

51015521155042 is a wasteful number, since it uses less digits than its factorization.

51015521155042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559885721.

The product of its (nonzero) digits is 50000, while the sum is 37.

The spelling of 51015521155042 in words is "fifty-one trillion, fifteen billion, five hundred twenty-one million, one hundred fifty-five thousand, forty-two".