55878733452 has 18 divisors (see below), whose sum is σ = 130385622108. Its totient is φ = 18625971528.

The previous prime is 55878733439. The next prime is 55878733453. The reversal of 55878733452 is 25433787855.

It is a junction number, because it is equal to n+sod(n) for n = 55878733392 and 55878733401.

It is not an unprimeable number, because it can be changed into a prime (55878733453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 784749 + ... + 852987.

Almost surely, 2^55878733452 is an apocalyptic number.

It is an amenable number.

55878733452 is an abundant number, since it is smaller than the sum of its proper divisors (74506888656).

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

55878733452 is an frugal number, since it uses more digits than its factorization.

55878733452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136485 (or 68244 counting only the distinct ones).

The product of its digits is 28224000, while the sum is 57.

The spelling of 55878733452 in words is "fifty-five billion, eight hundred seventy-eight million, seven hundred thirty-three thousand, four hundred fifty-two".