51076977504 has 144 divisors (see below), whose sum is σ = 156463777008. Its totient is φ = 14546961408.

The previous prime is 51076977503. The next prime is 51076977529. The reversal of 51076977504 is 40577967015.

It is a happy number.

51076977504 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51076977503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1474042 + ... + 1508294.

It is an arithmetic number, because the mean of its divisors is an integer number (1086554007).

Almost surely, 2^51076977504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51076977504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78231888504).

51076977504 is an abundant number, since it is smaller than the sum of its proper divisors (105386799504).

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

51076977504 is a wasteful number, since it uses less digits than its factorization.

51076977504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34597 (or 34582 counting only the distinct ones).

The product of its (nonzero) digits is 1852200, while the sum is 51.

It can be divided in two parts, 5107697 and 7504, that added together give a triangular number (5115201 = T₃₁₉₈).

The spelling of 51076977504 in words is "fifty-one billion, seventy-six million, nine hundred seventy-seven thousand, five hundred four".