139553959671 has 40 divisors (see below), whose sum is σ = 238863699360. Its totient is φ = 79539993792.

The previous prime is 139553959669. The next prime is 139553959679. The reversal of 139553959671 is 176959355931.

139553959671 is a `hidden beast` number, since 1 + 3 + 9 + 5 + 5 + 39 + 596 + 7 + 1 = 666.

It is not a de Polignac number, because 139553959671 - 2¹ = 139553959669 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 139553959599 and 139553959608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139553959679) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 95796 + ... + 536921.

It is an arithmetic number, because the mean of its divisors is an integer number (5971592484).

Almost surely, 2^139553959671 is an apocalyptic number.

139553959671 is a deficient number, since it is larger than the sum of its proper divisors (99309739689).

139553959671 is an equidigital number, since it uses as much as digits as its factorization.

139553959671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633125 (or 633116 counting only the distinct ones).

The product of its digits is 34445250, while the sum is 63.

The spelling of 139553959671 in words is "one hundred thirty-nine billion, five hundred fifty-three million, nine hundred fifty-nine thousand, six hundred seventy-one".