139306477122 has 18 divisors (see below), whose sum is σ = 301834131417. Its totient is φ = 46434964536.

The previous prime is 139306477109. The next prime is 139306477217. The reversal of 139306477122 is 221774603931.

139306477122 is a `hidden beast` number, since 139 + 30 + 6 + 477 + 12 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 108044347401 + 31262129721 = 328701^2 + 176811^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=263919.

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, 1539528 + ... + 1627500.

Almost surely, 2^139306477122 is an apocalyptic number.

139306477122 is an abundant number, since it is smaller than the sum of its proper divisors (162527654295).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139306477122 is an frugal number, since it uses more digits than its factorization.

139306477122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175954 (or 87978 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The spelling of 139306477122 in words is "one hundred thirty-nine billion, three hundred six million, four hundred seventy-seven thousand, one hundred twenty-two".