26627260840 has 32 divisors (see below), whose sum is σ = 59953274280. Its totient is φ = 10643448832.

The previous prime is 26627260819. The next prime is 26627260841. The reversal of 26627260840 is 4806272662.

It can be written as a sum of positive squares in 4 ways, for example, as 19186128196 + 7441132644 = 138514^2 + 86262^2 .

It is a super-2 number, since 2×26627260840² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26627260841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174949 + ... + 289588.

Almost surely, 2^26627260840 is an apocalyptic number.

26627260840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26627260840 is an abundant number, since it is smaller than the sum of its proper divisors (33326013440).

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

26627260840 is a wasteful number, since it uses less digits than its factorization.

26627260840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465981 (or 465977 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 43.

The spelling of 26627260840 in words is "twenty-six billion, six hundred twenty-seven million, two hundred sixty thousand, eight hundred forty".