21374267155003 has 32 divisors (see below), whose sum is σ = 25538289638400. Its totient is φ = 17490926509056.

The previous prime is 21374267154949. The next prime is 21374267155019. The reversal of 21374267155003 is 30055176247312.

It is a de Polignac number, because none of the positive numbers 2^k-21374267155003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21374267150003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 497297368 + ... + 497340346.

It is an arithmetic number, because the mean of its divisors is an integer number (798071551200).

Almost surely, 2^{21374267155003} is an apocalyptic number.

21374267155003 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21374267155003 is a deficient number, since it is larger than the sum of its proper divisors (4164022483397).

21374267155003 is a wasteful number, since it uses less digits than its factorization.

21374267155003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48811.

The product of its (nonzero) digits is 1058400, while the sum is 46.

The spelling of 21374267155003 in words is "twenty-one trillion, three hundred seventy-four billion, two hundred sixty-seven million, one hundred fifty-five thousand, three".