63661873157192 has 16 divisors (see below), whose sum is σ = 121322832042300. Its totient is φ = 31309117945920.

The previous prime is 63661873157143. The next prime is 63661873157279. The reversal of 63661873157192 is 29175137816636.

It can be written as a sum of positive squares in 2 ways, for example, as 47559036445636 + 16102836711556 = 6896306^2 + 4012834^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65227328567 + ... + 65227329542.

Almost surely, 2^{63661873157192} is an apocalyptic number.

It is an amenable number.

63661873157192 is a deficient number, since it is larger than the sum of its proper divisors (57660958885108).

63661873157192 is a wasteful number, since it uses less digits than its factorization.

63661873157192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130454658176 (or 130454658172 counting only the distinct ones).

The product of its digits is 68584320, while the sum is 65.

The spelling of 63661873157192 in words is "sixty-three trillion, six hundred sixty-one billion, eight hundred seventy-three million, one hundred fifty-seven thousand, one hundred ninety-two".