21374264151567 has 16 divisors (see below), whose sum is σ = 31665717468000. Its totient is φ = 14249446008192.

The previous prime is 21374264151563. The next prime is 21374264151593. The reversal of 21374264151567 is 76515146247312.

21374264151567 is a `hidden beast` number, since 2 + 1 + 3 + 7 + 4 + 2 + 64 + 1 + 515 + 67 = 666.

It is not a de Polignac number, because 21374264151567 - 2² = 21374264151563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21374264151563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4870309 + ... + 8152817.

It is an arithmetic number, because the mean of its divisors is an integer number (1979107341750).

Almost surely, 2^{21374264151567} is an apocalyptic number.

21374264151567 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

21374264151567 is a deficient number, since it is larger than the sum of its proper divisors (10291453316433).

21374264151567 is a wasteful number, since it uses less digits than its factorization.

21374264151567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3523687 (or 3523681 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 54.

The spelling of 21374264151567 in words is "twenty-one trillion, three hundred seventy-four billion, two hundred sixty-four million, one hundred fifty-one thousand, five hundred sixty-seven".