139451962161 has 16 divisors (see below), whose sum is σ = 189379814400. Its totient is φ = 91250916048.

The previous prime is 139451962159. The next prime is 139451962213. The reversal of 139451962161 is 161269154931.

139451962161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 139451962161 - 2¹ = 139451962159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139451962161.

It is not an unprimeable number, because it can be changed into a prime (139451962061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 494341 + ... + 723378.

It is an arithmetic number, because the mean of its divisors is an integer number (11836238400).

Almost surely, 2^139451962161 is an apocalyptic number.

It is an amenable number.

139451962161 is a deficient number, since it is larger than the sum of its proper divisors (49927852239).

139451962161 is a wasteful number, since it uses less digits than its factorization.

139451962161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218428.

The product of its digits is 349920, while the sum is 48.

The spelling of 139451962161 in words is "one hundred thirty-nine billion, four hundred fifty-one million, nine hundred sixty-two thousand, one hundred sixty-one".