21463642627 has 24 divisors (see below), whose sum is σ = 25456414320. Its totient is φ = 18039067200.

The previous prime is 21463642601. The next prime is 21463642631. The reversal of 21463642627 is 72624636412.

It is not a de Polignac number, because 21463642627 - 2¹¹ = 21463640579 is a prime.

It is a super-2 number, since 2×21463642627² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21463642667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1138377 + ... + 1157077.

It is an arithmetic number, because the mean of its divisors is an integer number (1060683930).

Almost surely, 2^21463642627 is an apocalyptic number.

21463642627 is a deficient number, since it is larger than the sum of its proper divisors (3992771693).

21463642627 is a wasteful number, since it uses less digits than its factorization.

21463642627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19171 (or 19164 counting only the distinct ones).

The product of its digits is 580608, while the sum is 43.

The spelling of 21463642627 in words is "twenty-one billion, four hundred sixty-three million, six hundred forty-two thousand, six hundred twenty-seven".