47866912640 has 32 divisors (see below), whose sum is σ = 114431839560. Its totient is φ = 19146764800.

The previous prime is 47866912637. The next prime is 47866912669. The reversal of 47866912640 is 4621966874.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37395386 + ... + 37396665.

Almost surely, 2^47866912640 is an apocalyptic number.

47866912640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47866912640 is an abundant number, since it is smaller than the sum of its proper divisors (66564926920).

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

47866912640 is an equidigital number, since it uses as much as digits as its factorization.

47866912640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74792070 (or 74792058 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 53.

The spelling of 47866912640 in words is "forty-seven billion, eight hundred sixty-six million, nine hundred twelve thousand, six hundred forty".