26929421604 has 18 divisors (see below), whose sum is σ = 68071593590. Its totient is φ = 8976473856.

The previous prime is 26929421581. The next prime is 26929421609. The reversal of 26929421604 is 40612492962.

It can be written as a sum of positive squares in only one way, i.e., 26814717504 + 114704100 = 163752^2 + 10710^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 26929421604.

It is not an unprimeable number, because it can be changed into a prime (26929421609) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 374019709 + ... + 374019780.

Almost surely, 2^26929421604 is an apocalyptic number.

It is an amenable number.

26929421604 is an abundant number, since it is smaller than the sum of its proper divisors (41142171986).

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

26929421604 is a wasteful number, since it uses less digits than its factorization.

26929421604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748039499 (or 748039494 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 26929421604 in words is "twenty-six billion, nine hundred twenty-nine million, four hundred twenty-one thousand, six hundred four".