51073776810 has 96 divisors (see below), whose sum is σ = 152339616000. Its totient is φ = 11629580544.

The previous prime is 51073776751. The next prime is 51073776811. The reversal of 51073776810 is 1867737015.

51073776810 is a `hidden beast` number, since 510 + 7 + 3 + 77 + 68 + 1 + 0 = 666.

It is a super-2 number, since 2×51073776810² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (51073776811) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11566 + ... + 319814.

It is an arithmetic number, because the mean of its divisors is an integer number (1586871000).

Almost surely, 2^51073776810 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51073776810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76169808000).

51073776810 is an abundant number, since it is smaller than the sum of its proper divisors (101265839190).

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

51073776810 is a wasteful number, since it uses less digits than its factorization.

51073776810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308532 (or 308529 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 45.

The spelling of 51073776810 in words is "fifty-one billion, seventy-three million, seven hundred seventy-six thousand, eight hundred ten".