26460632640 has 112 divisors (see below), whose sum is σ = 90475051968. Its totient is φ = 6513383424.

The previous prime is 26460632633. The next prime is 26460632677. The reversal of 26460632640 is 4623606462.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 1047642 + ... + 1072601.

It is an arithmetic number, because the mean of its divisors is an integer number (807812964).

Almost surely, 2^26460632640 is an apocalyptic number.

26460632640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26460632640 is an abundant number, since it is smaller than the sum of its proper divisors (64014419328).

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

26460632640 is a wasteful number, since it uses less digits than its factorization.

26460632640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120276 (or 2120266 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 39.

The spelling of 26460632640 in words is "twenty-six billion, four hundred sixty million, six hundred thirty-two thousand, six hundred forty".