26990563392 has 560 divisors, whose sum is σ = 92010219840. Its totient is φ = 7754600448.

The previous prime is 26990563357. The next prime is 26990563421. The reversal of 26990563392 is 29336509962.

It is a super-4 number, since 4×26990563392⁴ (a number of 43 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 137007838 + ... + 137008034.

It is an arithmetic number, because the mean of its divisors is an integer number (164303964).

Almost surely, 2^26990563392 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 26990563392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46005109920).

26990563392 is an abundant number, since it is smaller than the sum of its proper divisors (65019656448).

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

26990563392 is a wasteful number, since it uses less digits than its factorization.

26990563392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360 (or 341 counting only the distinct ones).

The product of its (nonzero) digits is 4723920, while the sum is 54.

The spelling of 26990563392 in words is "twenty-six billion, nine hundred ninety million, five hundred sixty-three thousand, three hundred ninety-two".