47446068640 has 24 divisors (see below), whose sum is σ = 112091337540. Its totient is φ = 18978427392.

The previous prime is 47446068619. The next prime is 47446068661. The reversal of 47446068640 is 4686064474.

It is an interprime number because it is at equal distance from previous prime (47446068619) and next prime (47446068661).

It can be written as a sum of positive squares in 2 ways, for example, as 39028373136 + 8417695504 = 197556^2 + 91748^2 .

It is a super-2 number, since 2×47446068640² (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 3 ways as a sum of consecutive naturals, for example, 148268805 + ... + 148269124.

Almost surely, 2^47446068640 is an apocalyptic number.

47446068640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47446068640 is an abundant number, since it is smaller than the sum of its proper divisors (64645268900).

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

47446068640 is a wasteful number, since it uses less digits than its factorization.

47446068640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296537944 (or 296537936 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 49.

The spelling of 47446068640 in words is "forty-seven billion, four hundred forty-six million, sixty-eight thousand, six hundred forty".