51042641072 has 20 divisors (see below), whose sum is σ = 103194905520. Its totient is φ = 24411697728.

The previous prime is 51042641071. The next prime is 51042641077. The reversal of 51042641072 is 27014624015.

It is not an unprimeable number, because it can be changed into a prime (51042641071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69351047 + ... + 69351782.

It is an arithmetic number, because the mean of its divisors is an integer number (5159745276).

Almost surely, 2^51042641072 is an apocalyptic number.

It is an amenable number.

51042641072 is an abundant number, since it is smaller than the sum of its proper divisors (52152264448).

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

51042641072 is a wasteful number, since it uses less digits than its factorization.

51042641072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138702860 (or 138702854 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The spelling of 51042641072 in words is "fifty-one billion, forty-two million, six hundred forty-one thousand, seventy-two".