47209962640 has 40 divisors (see below), whose sum is σ = 110734539768. Its totient is φ = 18716866560.

The previous prime is 47209962617. The next prime is 47209962649. The reversal of 47209962640 is 4626990274.

It can be written as a sum of positive squares in 4 ways, for example, as 1151652096 + 46058310544 = 33936^2 + 214612^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (47209962649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2602131 + ... + 2620210.

Almost surely, 2^47209962640 is an apocalyptic number.

47209962640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47209962640 is an abundant number, since it is smaller than the sum of its proper divisors (63524577128).

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

47209962640 is a wasteful number, since it uses less digits than its factorization.

47209962640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5222467 (or 5222461 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 47209962640 in words is "forty-seven billion, two hundred nine million, nine hundred sixty-two thousand, six hundred forty".