26634625920 has 384 divisors, whose sum is σ = 105586303680. Its totient is φ = 6060441600.

The previous prime is 26634625889. The next prime is 26634625931. The reversal of 26634625920 is 2952643662.

26634625920 is a `hidden beast` number, since 2 + 6 + 634 + 6 + 2 + 5 + 9 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 9715750 + ... + 9718490.

Almost surely, 2^26634625920 is an apocalyptic number.

26634625920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26634625920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52793151840).

26634625920 is an abundant number, since it is smaller than the sum of its proper divisors (78951677760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26634625920 is a wasteful number, since it uses less digits than its factorization.

26634625920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3014 (or 2999 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 45.

The spelling of 26634625920 in words is "twenty-six billion, six hundred thirty-four million, six hundred twenty-five thousand, nine hundred twenty".