26631005401 has 32 divisors (see below), whose sum is σ = 36587916288. Its totient is φ = 18709669440.

The previous prime is 26631005383. The next prime is 26631005447. The reversal of 26631005401 is 10450013662.

It is not a de Polignac number, because 26631005401 - 2⁵ = 26631005369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26631005401.

It is not an unprimeable number, because it can be changed into a prime (26631005491) 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, 266311 + ... + 352396.

It is an arithmetic number, because the mean of its divisors is an integer number (1143372384).

Almost surely, 2^26631005401 is an apocalyptic number.

It is an amenable number.

26631005401 is a deficient number, since it is larger than the sum of its proper divisors (9956910887).

26631005401 is a wasteful number, since it uses less digits than its factorization.

26631005401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618781.

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 26631005401 in words is "twenty-six billion, six hundred thirty-one million, five thousand, four hundred one".