2271656461560 has 128 divisors (see below), whose sum is σ = 7391846548800. Its totient is φ = 556235325440.

The previous prime is 2271656461553. The next prime is 2271656461573. The reversal of 2271656461560 is 651646561722.

It is a Harshad number since it is a multiple of its sum of digits (51).

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, 13496325 + ... + 13663604.

Almost surely, 2^{2271656461560} is an apocalyptic number.

2271656461560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2271656461560 is an abundant number, since it is smaller than the sum of its proper divisors (5120190087240).

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

2271656461560 is a wasteful number, since it uses less digits than its factorization.

2271656461560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27160001 (or 27159997 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 51.

The spelling of 2271656461560 in words is "two trillion, two hundred seventy-one billion, six hundred fifty-six million, four hundred sixty-one thousand, five hundred sixty".