21576372103 has 48 divisors (see below), whose sum is σ = 27100918656. Its totient is φ = 16931151360.

The previous prime is 21576372101. The next prime is 21576372107. The reversal of 21576372103 is 30127367512.

It is not a de Polignac number, because 21576372103 - 2¹ = 21576372101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21576372101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6734700 + ... + 6737902.

It is an arithmetic number, because the mean of its divisors is an integer number (564602472).

Almost surely, 2^21576372103 is an apocalyptic number.

21576372103 is a deficient number, since it is larger than the sum of its proper divisors (5524546553).

21576372103 is a wasteful number, since it uses less digits than its factorization.

21576372103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3424 (or 3407 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 37.

The spelling of 21576372103 in words is "twenty-one billion, five hundred seventy-six million, three hundred seventy-two thousand, one hundred three".