5661873572 has 6 divisors (see below), whose sum is σ = 9908278758. Its totient is φ = 2830936784.

The previous prime is 5661873521. The next prime is 5661873577. The reversal of 5661873572 is 2753781665.

It can be written as a sum of positive squares in only one way, i.e., 5618102116 + 43771456 = 74954^2 + 6616^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 5661873572.

It is not an unprimeable number, because it can be changed into a prime (5661873577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 707734193 + ... + 707734200.

It is an arithmetic number, because the mean of its divisors is an integer number (1651379793).

Almost surely, 2^5661873572 is an apocalyptic number.

It is an amenable number.

5661873572 is a deficient number, since it is larger than the sum of its proper divisors (4246405186).

5661873572 is a wasteful number, since it uses less digits than its factorization.

5661873572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415468397 (or 1415468395 counting only the distinct ones).

The product of its digits is 2116800, while the sum is 50.

The square root of 5661873572 is about 75245.4222660754. The cubic root of 5661873572 is about 1782.3242763301.

The spelling of 5661873572 in words is "five billion, six hundred sixty-one million, eight hundred seventy-three thousand, five hundred seventy-two".