47802337662661 has 4 divisors (see below), whose sum is σ = 47802353054400. Its totient is φ = 47802322270924.

The previous prime is 47802337662649. The next prime is 47802337662713. The reversal of 47802337662661 is 16626673320874.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47802337662661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47802337662661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47802337662641) 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, 1221991 + ... + 9853828.

It is an arithmetic number, because the mean of its divisors is an integer number (11950588263600).

Almost surely, 2^{47802337662661} is an apocalyptic number.

It is an amenable number.

47802337662661 is a deficient number, since it is larger than the sum of its proper divisors (15391739).

47802337662661 is a wasteful number, since it uses less digits than its factorization.

47802337662661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15391738.

The product of its (nonzero) digits is 73156608, while the sum is 61.

The spelling of 47802337662661 in words is "forty-seven trillion, eight hundred two billion, three hundred thirty-seven million, six hundred sixty-two thousand, six hundred sixty-one".