26478885540 has 48 divisors (see below), whose sum is σ = 74833803072. Its totient is φ = 6995043456.

The previous prime is 26478885533. The next prime is 26478885541. The reversal of 26478885540 is 4558887462.

It is a super-2 number, since 2×26478885540² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26478885541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2055799 + ... + 2068638.

It is an arithmetic number, because the mean of its divisors is an integer number (1559037564).

Almost surely, 2^26478885540 is an apocalyptic number.

26478885540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26478885540 is an abundant number, since it is smaller than the sum of its proper divisors (48354917532).

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

26478885540 is a wasteful number, since it uses less digits than its factorization.

26478885540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4124556 (or 4124554 counting only the distinct ones).

The product of its (nonzero) digits is 17203200, while the sum is 57.

The spelling of 26478885540 in words is "twenty-six billion, four hundred seventy-eight million, eight hundred eighty-five thousand, five hundred forty".