26537412440 has 64 divisors (see below), whose sum is σ = 74442620160. Its totient is φ = 8271400320.

The previous prime is 26537412359. The next prime is 26537412487. The reversal of 26537412440 is 4421473562.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 26537412394 and 26537412403.

It is a congruent number.

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, 4304942 + ... + 4311101.

It is an arithmetic number, because the mean of its divisors is an integer number (1163165940).

Almost surely, 2^26537412440 is an apocalyptic number.

26537412440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26537412440 is an abundant number, since it is smaller than the sum of its proper divisors (47905207720).

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

26537412440 is a wasteful number, since it uses less digits than its factorization.

26537412440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8616072 (or 8616068 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 38.

The spelling of 26537412440 in words is "twenty-six billion, five hundred thirty-seven million, four hundred twelve thousand, four hundred forty".