47721313572464 has 40 divisors (see below), whose sum is σ = 105687896315520. Its totient is φ = 20448261194688.

The previous prime is 47721313572463. The next prime is 47721313572473. The reversal of 47721313572464 is 46427531312774.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47721313572463) 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, 38240834 + ... + 39469025.

It is an arithmetic number, because the mean of its divisors is an integer number (2642197407888).

Almost surely, 2^{47721313572464} is an apocalyptic number.

It is an amenable number.

47721313572464 is an abundant number, since it is smaller than the sum of its proper divisors (57966582743056).

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

47721313572464 is a wasteful number, since it uses less digits than its factorization.

47721313572464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77715357 (or 77715351 counting only the distinct ones).

The product of its digits is 23708160, while the sum is 56.

The spelling of 47721313572464 in words is "forty-seven trillion, seven hundred twenty-one billion, three hundred thirteen million, five hundred seventy-two thousand, four hundred sixty-four".