137820622564 has 9 divisors (see below), whose sum is σ = 241187388841. Its totient is φ = 68909940040.

The previous prime is 137820622561. The next prime is 137820622649. The reversal of 137820622564 is 465226028731.

The square root of 137820622564 is 371242.

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., 535552164 + 137285070400 = 23142^2 + 370520^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137820622561) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 649674 + ... + 835294.

Almost surely, 2^137820622564 is an apocalyptic number.

137820622564 is the 371242-nd square number.

It is an amenable number.

137820622564 is a deficient number, since it is larger than the sum of its proper divisors (103366766277).

137820622564 is an frugal number, since it uses more digits than its factorization.

137820622564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371246 (or 185623 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 46.

It can be divided in two parts, 137820 and 622564, that added together give a square (760384 = 872²).

The spelling of 137820622564 in words is "one hundred thirty-seven billion, eight hundred twenty million, six hundred twenty-two thousand, five hundred sixty-four".