26012637642 has 64 divisors (see below), whose sum is σ = 53065152000. Its totient is φ = 8499930048.

The previous prime is 26012637619. The next prime is 26012637661. The reversal of 26012637642 is 24673621062.

It is a self number, because there is not a number n which added to its sum of digits gives 26012637642.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24333084 + ... + 24334152.

It is an arithmetic number, because the mean of its divisors is an integer number (829143000).

Almost surely, 2^26012637642 is an apocalyptic number.

26012637642 is an abundant number, since it is smaller than the sum of its proper divisors (27052514358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26012637642 is a wasteful number, since it uses less digits than its factorization.

26012637642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555.

The product of its (nonzero) digits is 145152, while the sum is 39.

The spelling of 26012637642 in words is "twenty-six billion, twelve million, six hundred thirty-seven thousand, six hundred forty-two".