15611642143 has 2 divisors, whose sum is σ = 15611642144. Its totient is φ = 15611642142.

The previous prime is 15611642089. The next prime is 15611642149. The reversal of 15611642143 is 34124611651.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15611642143 - 2²¹ = 15609544991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15611642099 and 15611642108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15611642149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7805821071 + 7805821072.

It is an arithmetic number, because the mean of its divisors is an integer number (7805821072).

Almost surely, 2^15611642143 is an apocalyptic number.

15611642143 is a deficient number, since it is larger than the sum of its proper divisors (1).

15611642143 is an equidigital number, since it uses as much as digits as its factorization.

15611642143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 34.

The spelling of 15611642143 in words is "fifteen billion, six hundred eleven million, six hundred forty-two thousand, one hundred forty-three".