55319576780 has 24 divisors (see below), whose sum is σ = 125107351152. Its totient is φ = 20425689792.

The previous prime is 55319576771. The next prime is 55319576783. The reversal of 55319576780 is 8767591355.

It is not an unprimeable number, because it can be changed into a prime (55319576783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106383542 + ... + 106384061.

It is an arithmetic number, because the mean of its divisors is an integer number (5212806298).

Almost surely, 2^55319576780 is an apocalyptic number.

It is an amenable number.

55319576780 is an abundant number, since it is smaller than the sum of its proper divisors (69787774372).

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

55319576780 is a wasteful number, since it uses less digits than its factorization.

55319576780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212767625 (or 212767623 counting only the distinct ones).

The product of its (nonzero) digits is 7938000, while the sum is 56.

The spelling of 55319576780 in words is "fifty-five billion, three hundred nineteen million, five hundred seventy-six thousand, seven hundred eighty".