26661153792 has 352 divisors, whose sum is σ = 88030039552. Its totient is φ = 6985875456.

The previous prime is 26661153791. The next prime is 26661153797. The reversal of 26661153792 is 29735116662.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (26661153791) 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, 79113048 + ... + 79113384.

Almost surely, 2^26661153792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26661153792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44015019776).

26661153792 is an abundant number, since it is smaller than the sum of its proper divisors (61368885760).

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

26661153792 is a wasteful number, since it uses less digits than its factorization.

26661153792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663 (or 645 counting only the distinct ones).

The product of its digits is 816480, while the sum is 48.

The spelling of 26661153792 in words is "twenty-six billion, six hundred sixty-one million, one hundred fifty-three thousand, seven hundred ninety-two".