51147220074 has 32 divisors (see below), whose sum is σ = 103895784000. Its totient is φ = 16783857024.

The previous prime is 51147220027. The next prime is 51147220127. The reversal of 51147220074 is 47002274115.

51147220074 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 86844 + ... + 331415.

It is an arithmetic number, because the mean of its divisors is an integer number (3246743250).

Almost surely, 2^51147220074 is an apocalyptic number.

51147220074 is an abundant number, since it is smaller than the sum of its proper divisors (52748563926).

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

51147220074 is a wasteful number, since it uses less digits than its factorization.

51147220074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418582.

The product of its (nonzero) digits is 15680, while the sum is 33.

Adding to 51147220074 its reverse (47002274115), we get a palindrome (98149494189).

The spelling of 51147220074 in words is "fifty-one billion, one hundred forty-seven million, two hundred twenty thousand, seventy-four".