26864687630 has 32 divisors (see below), whose sum is σ = 53264659968. Its totient is φ = 9674128800.

The previous prime is 26864687621. The next prime is 26864687639. The reversal of 26864687630 is 3678646862.

It is an interprime number because it is at equal distance from previous prime (26864687621) and next prime (26864687639).

It is a super-2 number, since 2×26864687630² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26864687639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1174226 + ... + 1196885.

It is an arithmetic number, because the mean of its divisors is an integer number (1664520624).

Almost surely, 2^26864687630 is an apocalyptic number.

26864687630 is a deficient number, since it is larger than the sum of its proper divisors (26399972338).

26864687630 is a wasteful number, since it uses less digits than its factorization.

26864687630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2371232.

The product of its (nonzero) digits is 13934592, while the sum is 56.

The spelling of 26864687630 in words is "twenty-six billion, eight hundred sixty-four million, six hundred eighty-seven thousand, six hundred thirty".