1396551970564 has 27 divisors (see below), whose sum is σ = 2458440421941. Its totient is φ = 694164649200.

The previous prime is 1396551970553. The next prime is 1396551970571. The reversal of 1396551970564 is 4650791556931.

The square root of 1396551970564 is 1181758.

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

It can be written as a sum of positive squares in only one way, i.e., 288753620164 + 1107798350400 = 537358^2 + 1052520^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 423067714 + ... + 423071014.

Almost surely, 2^{1396551970564} is an apocalyptic number.

1396551970564 is the 1181758-th square number.

It is an amenable number.

1396551970564 is a deficient number, since it is larger than the sum of its proper divisors (1061888451377).

1396551970564 is an frugal number, since it uses more digits than its factorization.

1396551970564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6964 (or 3482 counting only the distinct ones).

The product of its (nonzero) digits is 30618000, while the sum is 61.

The spelling of 1396551970564 in words is "one trillion, three hundred ninety-six billion, five hundred fifty-one million, nine hundred seventy thousand, five hundred sixty-four".