26276277640 has 64 divisors (see below), whose sum is σ = 59528779200. Its totient is φ = 10438326528.

The previous prime is 26276277637. The next prime is 26276277653. The reversal of 26276277640 is 4677267262.

It is a super-2 number, since 2×26276277640² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4875027 + ... + 4880413.

It is an arithmetic number, because the mean of its divisors is an integer number (930137175).

Almost surely, 2^26276277640 is an apocalyptic number.

26276277640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26276277640 is an abundant number, since it is smaller than the sum of its proper divisors (33252501560).

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

26276277640 is a wasteful number, since it uses less digits than its factorization.

26276277640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6214 (or 6210 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 49.

The spelling of 26276277640 in words is "twenty-six billion, two hundred seventy-six million, two hundred seventy-seven thousand, six hundred forty".