26628051807 has 32 divisors (see below), whose sum is σ = 46639180800. Its totient is φ = 14691335904.

The previous prime is 26628051787. The next prime is 26628051871. The reversal of 26628051807 is 70815082662.

26628051807 is a `hidden beast` number, since 2 + 6 + 628 + 0 + 5 + 18 + 0 + 7 = 666.

It is not a de Polignac number, because 26628051807 - 2⁶ = 26628051743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26628051407) 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, 2423643 + ... + 2434604.

It is an arithmetic number, because the mean of its divisors is an integer number (1457474400).

Almost surely, 2^26628051807 is an apocalyptic number.

26628051807 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

26628051807 is a deficient number, since it is larger than the sum of its proper divisors (20011128993).

26628051807 is a wasteful number, since it uses less digits than its factorization.

26628051807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4858292 (or 4858286 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 26628051807 in words is "twenty-six billion, six hundred twenty-eight million, fifty-one thousand, eight hundred seven".