139553396945 has 8 divisors (see below), whose sum is σ = 167469836136. Its totient is φ = 111638877696.

The previous prime is 139553396921. The next prime is 139553396953. The reversal of 139553396945 is 549693355931.

It can be written as a sum of positive squares in 4 ways, for example, as 1057030144 + 138496366801 = 32512^2 + 372151^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 139553396945 - 2⁶ = 139553396881 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314912 + ... + 615041.

It is an arithmetic number, because the mean of its divisors is an integer number (20933729517).

Almost surely, 2^139553396945 is an apocalyptic number.

It is an amenable number.

139553396945 is a deficient number, since it is larger than the sum of its proper divisors (27916439191).

139553396945 is an equidigital number, since it uses as much as digits as its factorization.

139553396945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959971.

The product of its digits is 59049000, while the sum is 62.

The spelling of 139553396945 in words is "one hundred thirty-nine billion, five hundred fifty-three million, three hundred ninety-six thousand, nine hundred forty-five".