26951153691 has 32 divisors (see below), whose sum is σ = 44812800000. Its totient is φ = 13997198880.

The previous prime is 26951153681. The next prime is 26951153737. The reversal of 26951153691 is 19635115962.

It is not a de Polignac number, because 26951153691 - 2⁵ = 26951153659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26951153691.

It is not an unprimeable number, because it can be changed into a prime (26951153681) 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, 1143100 + ... + 1166438.

It is an arithmetic number, because the mean of its divisors is an integer number (1400400000).

Almost surely, 2^26951153691 is an apocalyptic number.

26951153691 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

26951153691 is a deficient number, since it is larger than the sum of its proper divisors (17861646309).

26951153691 is a wasteful number, since it uses less digits than its factorization.

26951153691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28359.

The product of its digits is 437400, while the sum is 48.

The spelling of 26951153691 in words is "twenty-six billion, nine hundred fifty-one million, one hundred fifty-three thousand, six hundred ninety-one".