18900056255155 has 16 divisors (see below), whose sum is σ = 22791184998624. Its totient is φ = 15046076512000.

The previous prime is 18900056255149. The next prime is 18900056255161. The reversal of 18900056255155 is 55155265000981.

It is an interprime number because it is at equal distance from previous prime (18900056255149) and next prime (18900056255161).

It is not a de Polignac number, because 18900056255155 - 2¹¹ = 18900056253107 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5487352 + ... + 8240821.

It is an arithmetic number, because the mean of its divisors is an integer number (1424449062414).

Almost surely, 2^{18900056255155} is an apocalyptic number.

18900056255155 is a deficient number, since it is larger than the sum of its proper divisors (3891128743469).

18900056255155 is a wasteful number, since it uses less digits than its factorization.

18900056255155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13729526.

The product of its (nonzero) digits is 2700000, while the sum is 52.

The spelling of 18900056255155 in words is "eighteen trillion, nine hundred billion, fifty-six million, two hundred fifty-five thousand, one hundred fifty-five".