51554440776 has 16 divisors (see below), whose sum is σ = 128886102000. Its totient is φ = 17184813584.

The previous prime is 51554440747. The next prime is 51554440801. The reversal of 51554440776 is 67704445515.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1074050826 + ... + 1074050873.

It is an arithmetic number, because the mean of its divisors is an integer number (8055381375).

Almost surely, 2^51554440776 is an apocalyptic number.

It is an amenable number.

51554440776 is an abundant number, since it is smaller than the sum of its proper divisors (77331661224).

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

51554440776 is a wasteful number, since it uses less digits than its factorization.

51554440776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148101708 (or 2148101704 counting only the distinct ones).

The product of its (nonzero) digits is 2352000, while the sum is 48.

The spelling of 51554440776 in words is "fifty-one billion, five hundred fifty-four million, four hundred forty thousand, seven hundred seventy-six".