63970659363556 has 81 divisors (see below), whose sum is σ = 123708742139619. Its totient is φ = 28922967889200.

The previous prime is 63970659363431. The next prime is 63970659363599. The reversal of 63970659363556 is 65536395607936.

The square root of 63970659363556 is 7998166.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×63970659363556² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 37127485711 + ... + 37127487433.

Almost surely, 2^{63970659363556} is an apocalyptic number.

63970659363556 is the 7998166-th square number.

It is an amenable number.

63970659363556 is a deficient number, since it is larger than the sum of its proper divisors (59738082776063).

63970659363556 is an equidigital number, since it uses as much as digits as its factorization.

63970659363556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3894 (or 1947 counting only the distinct ones).

The product of its (nonzero) digits is 2480058000, while the sum is 73.

The spelling of 63970659363556 in words is "sixty-three trillion, nine hundred seventy billion, six hundred fifty-nine million, three hundred sixty-three thousand, five hundred fifty-six".