139698032644 has 27 divisors (see below), whose sum is σ = 259721785407. Its totient is φ = 65734270464.

The previous prime is 139698032599. The next prime is 139698032657. The reversal of 139698032644 is 446230896931.

The square root of 139698032644 is 373762.

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

It can be written as a sum of positive squares in 4 ways, for example, as 658538244 + 139039494400 = 25662^2 + 372880^2 .

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, 12702412 + ... + 12713404.

Almost surely, 2^139698032644 is an apocalyptic number.

139698032644 is the 373762-nd square number.

It is an amenable number.

139698032644 is a deficient number, since it is larger than the sum of its proper divisors (120023752763).

139698032644 is an frugal number, since it uses more digits than its factorization.

139698032644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22024 (or 11012 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 55.

The spelling of 139698032644 in words is "one hundred thirty-nine billion, six hundred ninety-eight million, thirty-two thousand, six hundred forty-four".