26277972560 has 80 divisors (see below), whose sum is σ = 71527421952. Its totient is φ = 8789836800.

The previous prime is 26277972551. The next prime is 26277972569. The reversal of 26277972560 is 6527977262.

It is an interprime number because it is at equal distance from previous prime (26277972551) and next prime (26277972569).

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×26277972560² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26277972569) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 549296 + ... + 595215.

Almost surely, 2^26277972560 is an apocalyptic number.

26277972560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26277972560 is an abundant number, since it is smaller than the sum of its proper divisors (45249449392).

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

26277972560 is a wasteful number, since it uses less digits than its factorization.

26277972560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144572 (or 1144566 counting only the distinct ones).

The product of its (nonzero) digits is 4445280, while the sum is 53.

The spelling of 26277972560 in words is "twenty-six billion, two hundred seventy-seven million, nine hundred seventy-two thousand, five hundred sixty".