139876722648601 has 27 divisors (see below), whose sum is σ = 149693658919551. Its totient is φ = 130684191057504.

The previous prime is 139876722648557. The next prime is 139876722648623. The reversal of 139876722648601 is 106846227678931.

The square root of 139876722648601 is 11826949.

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., 79400841811225 + 60475880837376 = 8910715^2 + 7776624^2 .

It is not a de Polignac number, because 139876722648601 - 2¹⁷ = 139876722517529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139876722648661) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 16403974000 + ... + 16403982526.

It is an arithmetic number, because the mean of its divisors is an integer number (5544209589613).

Almost surely, 2^{139876722648601} is an apocalyptic number.

139876722648601 is the 11826949-th square number.

139876722648601 is the 5913475-th centered octagonal number.

It is an amenable number.

139876722648601 is a deficient number, since it is larger than the sum of its proper divisors (9816936270950).

139876722648601 is an frugal number, since it uses more digits than its factorization.

139876722648601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17238 (or 8619 counting only the distinct ones).

The product of its (nonzero) digits is 292626432, while the sum is 70.

The spelling of 139876722648601 in words is "one hundred thirty-nine trillion, eight hundred seventy-six billion, seven hundred twenty-two million, six hundred forty-eight thousand, six hundred one".