139033279561 has 8 divisors (see below), whose sum is σ = 151712659584. Its totient is φ = 126360564720.

The previous prime is 139033279537. The next prime is 139033279579. The reversal of 139033279561 is 165972330931.

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 139033279561 - 2⁷ = 139033279433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139033219561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1622625 + ... + 1706158.

It is an arithmetic number, because the mean of its divisors is an integer number (18964082448).

Almost surely, 2^139033279561 is an apocalyptic number.

139033279561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

139033279561 is a deficient number, since it is larger than the sum of its proper divisors (12679380023).

139033279561 is a wasteful number, since it uses less digits than its factorization.

139033279561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3332591.

The product of its (nonzero) digits is 918540, while the sum is 49.

The spelling of 139033279561 in words is "one hundred thirty-nine billion, thirty-three million, two hundred seventy-nine thousand, five hundred sixty-one".