15161139401 has 4 divisors (see below), whose sum is σ = 15163485204. Its totient is φ = 15158793600.

The previous prime is 15161139347. The next prime is 15161139407. The reversal of 15161139401 is 10493116151.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9825567376 + 5335572025 = 99124^2 + 73045^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15161139401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15161139407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1163180 + ... + 1176141.

It is an arithmetic number, because the mean of its divisors is an integer number (3790871301).

Almost surely, 2^15161139401 is an apocalyptic number.

It is an amenable number.

15161139401 is a deficient number, since it is larger than the sum of its proper divisors (2345803).

15161139401 is an equidigital number, since it uses as much as digits as its factorization.

15161139401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2345802.

The product of its (nonzero) digits is 3240, while the sum is 32.

The spelling of 15161139401 in words is "fifteen billion, one hundred sixty-one million, one hundred thirty-nine thousand, four hundred one".