555878872978 has 64 divisors (see below), whose sum is σ = 1046908291968. Its totient is φ = 217464376320.

The previous prime is 555878872963. The next prime is 555878872979. The reversal of 555878872978 is 879278878555.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 555878872898 and 555878872907.

It is not an unprimeable number, because it can be changed into a prime (555878872979) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14025 + ... + 1054492.

It is an arithmetic number, because the mean of its divisors is an integer number (16357942062).

Almost surely, 2^555878872978 is an apocalyptic number.

555878872978 is a deficient number, since it is larger than the sum of its proper divisors (491029418990).

555878872978 is a wasteful number, since it uses less digits than its factorization.

555878872978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068667.

The product of its digits is 3161088000, while the sum is 79.

The spelling of 555878872978 in words is "five hundred fifty-five billion, eight hundred seventy-eight million, eight hundred seventy-two thousand, nine hundred seventy-eight".