55555004999977 has 32 divisors (see below), whose sum is σ = 69326345774592. Its totient is φ = 43480997074944.

The previous prime is 55555004999953. The next prime is 55555004999993. The reversal of 55555004999977 is 77999940055555.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 55555004999977 - 2²³ = 55554996611369 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55555004999897 and 55555004999906.

It is not an unprimeable number, because it can be changed into a prime (55555004993977) 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, 87665448 + ... + 88296889.

It is an arithmetic number, because the mean of its divisors is an integer number (2166448305456).

Almost surely, 2^{55555004999977} is an apocalyptic number.

It is an amenable number.

55555004999977 is a deficient number, since it is larger than the sum of its proper divisors (13771340774615).

55555004999977 is a wasteful number, since it uses less digits than its factorization.

55555004999977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175962457.

The product of its (nonzero) digits is 4018612500, while the sum is 79.

The spelling of 55555004999977 in words is "fifty-five trillion, five hundred fifty-five billion, four million, nine hundred ninety-nine thousand, nine hundred seventy-seven".