26540015560 has 32 divisors (see below), whose sum is σ = 62311343040. Its totient is φ = 10154440384.

The previous prime is 26540015539. The next prime is 26540015581. The reversal of 26540015560 is 6551004562.

It is an interprime number because it is at equal distance from previous prime (26540015539) and next prime (26540015581).

It is a super-2 number, since 2×26540015560² (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 7 ways as a sum of consecutive naturals, for example, 14423002 + ... + 14424841.

It is an arithmetic number, because the mean of its divisors is an integer number (1947229470).

Almost surely, 2^26540015560 is an apocalyptic number.

26540015560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26540015560 is an abundant number, since it is smaller than the sum of its proper divisors (35771327480).

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

26540015560 is a wasteful number, since it uses less digits than its factorization.

26540015560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28847877 (or 28847873 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 26540015560 in words is "twenty-six billion, five hundred forty million, fifteen thousand, five hundred sixty".