21514231073047 has 16 divisors (see below), whose sum is σ = 22995389894400. Its totient is φ = 20068701972480.

The previous prime is 21514231073033. The next prime is 21514231073059. The reversal of 21514231073047 is 74037013241512.

It is a cyclic number.

It is not a de Polignac number, because 21514231073047 - 2¹⁵ = 21514231040279 is a prime.

It is a super-2 number, since 2×21514231073047² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21514231073017) 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, 9332113 + ... + 11406874.

It is an arithmetic number, because the mean of its divisors is an integer number (1437211868400).

Almost surely, 2^{21514231073047} is an apocalyptic number.

21514231073047 is a deficient number, since it is larger than the sum of its proper divisors (1481158821353).

21514231073047 is a wasteful number, since it uses less digits than its factorization.

21514231073047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20739846.

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 21514231073047 in words is "twenty-one trillion, five hundred fourteen billion, two hundred thirty-one million, seventy-three thousand, forty-seven".