51001081158 has 32 divisors (see below), whose sum is σ = 102283917696. Its totient is φ = 16953462848.

The previous prime is 51001081009. The next prime is 51001081181. The reversal of 51001081158 is 85118010015.

It is a super-2 number, since 2×51001081158² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3698785 + ... + 3712547.

It is an arithmetic number, because the mean of its divisors is an integer number (3196372428).

Almost surely, 2^51001081158 is an apocalyptic number.

51001081158 is an abundant number, since it is smaller than the sum of its proper divisors (51282836538).

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

51001081158 is a wasteful number, since it uses less digits than its factorization.

51001081158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15428.

The product of its (nonzero) digits is 1600, while the sum is 30.

The spelling of 51001081158 in words is "fifty-one billion, one million, eighty-one thousand, one hundred fifty-eight".