51779460000 has 120 divisors (see below), whose sum is σ = 169847181504. Its totient is φ = 13807840000.

The previous prime is 51779459969. The next prime is 51779460011. The reversal of 51779460000 is 6497715.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×51779460000² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 371496 + ... + 491495.

Almost surely, 2^51779460000 is an apocalyptic number.

51779460000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51779460000 is an abundant number, since it is smaller than the sum of its proper divisors (118067721504).

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

51779460000 is an equidigital number, since it uses as much as digits as its factorization.

51779460000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863024 (or 863001 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 39.

The spelling of 51779460000 in words is "fifty-one billion, seven hundred seventy-nine million, four hundred sixty thousand".