51122695288 has 24 divisors (see below), whose sum is σ = 111504859200. Its totient is φ = 21909726384.

The previous prime is 51122695271. The next prime is 51122695289. The reversal of 51122695288 is 88259622115.

It is a super-2 number, since 2×51122695288² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51122695289) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65207128 + ... + 65207911.

It is an arithmetic number, because the mean of its divisors is an integer number (4646035800).

Almost surely, 2^51122695288 is an apocalyptic number.

It is an amenable number.

51122695288 is an abundant number, since it is smaller than the sum of its proper divisors (60382163912).

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

51122695288 is a wasteful number, since it uses less digits than its factorization.

51122695288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130415059 (or 130415048 counting only the distinct ones).

The product of its digits is 691200, while the sum is 49.

The spelling of 51122695288 in words is "fifty-one billion, one hundred twenty-two million, six hundred ninety-five thousand, two hundred eighty-eight".