48537005661 has 6 divisors (see below), whose sum is σ = 70109008190. Its totient is φ = 32358003768.

The previous prime is 48537005653. The next prime is 48537005701. The reversal of 48537005661 is 16650073584.

48537005661 is a `hidden beast` number, since 4 + 8 + 537 + 0 + 0 + 56 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 48362607225 + 174398436 = 219915^2 + 13206^2 .

It is not a de Polignac number, because 48537005661 - 2³ = 48537005653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48537005611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2696500306 + ... + 2696500323.

Almost surely, 2^48537005661 is an apocalyptic number.

It is an amenable number.

48537005661 is a deficient number, since it is larger than the sum of its proper divisors (21572002529).

48537005661 is a wasteful number, since it uses less digits than its factorization.

48537005661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5393000635 (or 5393000632 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 48537005661 in words is "forty-eight billion, five hundred thirty-seven million, five thousand, six hundred sixty-one".