26402612621 has 32 divisors (see below), whose sum is σ = 34370688000. Its totient is φ = 20094888240.

The previous prime is 26402612609. The next prime is 26402612627. The reversal of 26402612621 is 12621620462.

It is not a de Polignac number, because 26402612621 - 2¹⁸ = 26402350477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26402612627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80870 + ... + 243608.

It is an arithmetic number, because the mean of its divisors is an integer number (1074084000).

Almost surely, 2^26402612621 is an apocalyptic number.

It is an amenable number.

26402612621 is a deficient number, since it is larger than the sum of its proper divisors (7968075379).

26402612621 is a wasteful number, since it uses less digits than its factorization.

26402612621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162814 (or 162800 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 26402612621 in words is "twenty-six billion, four hundred two million, six hundred twelve thousand, six hundred twenty-one".