139221519376 has 15 divisors (see below), whose sum is σ = 269744585533. Its totient is φ = 69610013440.

The previous prime is 139221519361. The next prime is 139221519383. The reversal of 139221519376 is 673915122931.

It is a happy number.

The square root of 139221519376 is 373124.

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., 137697397776 + 1524121600 = 371076^2 + 39040^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1445856 + ... + 1539136.

Almost surely, 2^139221519376 is an apocalyptic number.

139221519376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

139221519376 is the 373124-th square number.

It is an amenable number.

139221519376 is a deficient number, since it is larger than the sum of its proper divisors (130523066157).

139221519376 is an frugal number, since it uses more digits than its factorization.

139221519376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186570 (or 93283 counting only the distinct ones).

The product of its digits is 612360, while the sum is 49.

Multiplying 139221519376 by its sum of digits (49), we get a square (6821854449424 = 2611868²).

The spelling of 139221519376 in words is "one hundred thirty-nine billion, two hundred twenty-one million, five hundred nineteen thousand, three hundred seventy-six".