48734721661 has 8 divisors (see below), whose sum is σ = 51793301880. Its totient is φ = 45697456128.

The previous prime is 48734721653. The next prime is 48734721683. The reversal of 48734721661 is 16612743784.

It can be written as a sum of positive squares in 4 ways, for example, as 5442012900 + 43292708761 = 73770^2 + 208069^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 48734721661 - 2³ = 48734721653 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 (48734721601) 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, 5323956 + ... + 5333101.

It is an arithmetic number, because the mean of its divisors is an integer number (6474162735).

Almost surely, 2^48734721661 is an apocalyptic number.

It is an amenable number.

48734721661 is a deficient number, since it is larger than the sum of its proper divisors (3058580219).

48734721661 is a wasteful number, since it uses less digits than its factorization.

48734721661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10657343.

The product of its digits is 1354752, while the sum is 49.

The spelling of 48734721661 in words is "forty-eight billion, seven hundred thirty-four million, seven hundred twenty-one thousand, six hundred sixty-one".