55784477996 has 12 divisors (see below), whose sum is σ = 105132285552. Its totient is φ = 25746682128.

The previous prime is 55784477971. The next prime is 55784477999. The reversal of 55784477996 is 69977448755.

55784477996 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55784477996² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55784477999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 536389160 + ... + 536389263.

It is an arithmetic number, because the mean of its divisors is an integer number (8761023796).

Almost surely, 2^55784477996 is an apocalyptic number.

It is an amenable number.

55784477996 is a deficient number, since it is larger than the sum of its proper divisors (49347807556).

55784477996 is a wasteful number, since it uses less digits than its factorization.

55784477996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072778440 (or 1072778438 counting only the distinct ones).

The product of its digits is 533433600, while the sum is 71.

The spelling of 55784477996 in words is "fifty-five billion, seven hundred eighty-four million, four hundred seventy-seven thousand, nine hundred ninety-six".