26503994990 has 32 divisors (see below), whose sum is σ = 52186097664. Its totient is φ = 9611540640.

The previous prime is 26503994939. The next prime is 26503995041. The reversal of 26503994990 is 9949930562.

It is an interprime number because it is at equal distance from previous prime (26503994939) and next prime (26503995041).

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287894 + ... + 368633.

It is an arithmetic number, because the mean of its divisors is an integer number (1630815552).

Almost surely, 2^26503994990 is an apocalyptic number.

26503994990 is a deficient number, since it is larger than the sum of its proper divisors (25682102674).

26503994990 is a wasteful number, since it uses less digits than its factorization.

26503994990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656912.

The product of its (nonzero) digits is 4723920, while the sum is 56.

The spelling of 26503994990 in words is "twenty-six billion, five hundred three million, nine hundred ninety-four thousand, nine hundred ninety".