26401663792 has 40 divisors (see below), whose sum is σ = 58634385056. Its totient is φ = 11281406976.

The previous prime is 26401663733. The next prime is 26401663811. The reversal of 26401663792 is 29736610462.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312003 + ... + 387490.

Almost surely, 2^26401663792 is an apocalyptic number.

It is an amenable number.

26401663792 is an abundant number, since it is smaller than the sum of its proper divisors (32232721264).

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

26401663792 is a wasteful number, since it uses less digits than its factorization.

26401663792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699845 (or 699839 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 46.

The spelling of 26401663792 in words is "twenty-six billion, four hundred one million, six hundred sixty-three thousand, seven hundred ninety-two".