47722656440 has 128 divisors (see below), whose sum is σ = 115781529600. Its totient is φ = 17647418880.

The previous prime is 47722656431. The next prime is 47722656467. The reversal of 47722656440 is 4465622774.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7690379 + ... + 7696581.

It is an arithmetic number, because the mean of its divisors is an integer number (904543200).

Almost surely, 2^47722656440 is an apocalyptic number.

47722656440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47722656440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57890764800).

47722656440 is an abundant number, since it is smaller than the sum of its proper divisors (68058873160).

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

47722656440 is a wasteful number, since it uses less digits than its factorization.

47722656440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6477 (or 6473 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 47.

The spelling of 47722656440 in words is "forty-seven billion, seven hundred twenty-two million, six hundred fifty-six thousand, four hundred forty".