156142247369 has 2 divisors, whose sum is σ = 156142247370. Its totient is φ = 156142247368.

The previous prime is 156142247351. The next prime is 156142247449. The reversal of 156142247369 is 963742241651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123648579769 + 32493667600 = 351637^2 + 180260^2 .

It is a cyclic number.

It is not a de Polignac number, because 156142247369 - 2²⁰ = 156141198793 is a prime.

It is a super-2 number, since 2×156142247369² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (156142247329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78071123684 + 78071123685.

It is an arithmetic number, because the mean of its divisors is an integer number (78071123685).

Almost surely, 2^156142247369 is an apocalyptic number.

It is an amenable number.

156142247369 is a deficient number, since it is larger than the sum of its proper divisors (1).

156142247369 is an equidigital number, since it uses as much as digits as its factorization.

156142247369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 50.

The spelling of 156142247369 in words is "one hundred fifty-six billion, one hundred forty-two million, two hundred forty-seven thousand, three hundred sixty-nine".