51375040771000 has 64 divisors (see below), whose sum is σ = 120401697386880. Its totient is φ = 20518545884800.

The previous prime is 51375040770961. The next prime is 51375040771003. The reversal of 51375040771000 is 17704057315.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51375040771003) 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, 38684704 + ... + 39990703.

It is an arithmetic number, because the mean of its divisors is an integer number (1881276521670).

Almost surely, 2^{51375040771000} is an apocalyptic number.

51375040771000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51375040771000 is an abundant number, since it is smaller than the sum of its proper divisors (69026656615880).

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

51375040771000 is a wasteful number, since it uses less digits than its factorization.

51375040771000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78676081 (or 78676067 counting only the distinct ones).

The product of its (nonzero) digits is 102900, while the sum is 40.

The spelling of 51375040771000 in words is "fifty-one trillion, three hundred seventy-five billion, forty million, seven hundred seventy-one thousand".