47780560664 has 16 divisors (see below), whose sum is σ = 89657965320. Its totient is φ = 23871769920.

The previous prime is 47780560661. The next prime is 47780560673. The reversal of 47780560664 is 46606508774.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47780560661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2302829 + ... + 2323484.

Almost surely, 2^47780560664 is an apocalyptic number.

It is an amenable number.

47780560664 is a deficient number, since it is larger than the sum of its proper divisors (41877404656).

47780560664 is a wasteful number, since it uses less digits than its factorization.

47780560664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4627610 (or 4627606 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 53.

The spelling of 47780560664 in words is "forty-seven billion, seven hundred eighty million, five hundred sixty thousand, six hundred sixty-four".