51377749602 has 32 divisors (see below), whose sum is σ = 106352740800. Its totient is φ = 16526975808.

The previous prime is 51377749601. The next prime is 51377749607. The reversal of 51377749602 is 20694777315.

It is a happy number.

It is a super-2 number, since 2×51377749602² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51377749601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273549 + ... + 421407.

It is an arithmetic number, because the mean of its divisors is an integer number (3323523150).

Almost surely, 2^51377749602 is an apocalyptic number.

51377749602 is an abundant number, since it is smaller than the sum of its proper divisors (54974991198).

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

51377749602 is a wasteful number, since it uses less digits than its factorization.

51377749602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149890.

The product of its (nonzero) digits is 2222640, while the sum is 51.

The spelling of 51377749602 in words is "fifty-one billion, three hundred seventy-seven million, seven hundred forty-nine thousand, six hundred two".