239680359561 has 4 divisors (see below), whose sum is σ = 319573812752. Its totient is φ = 159786906372.

The previous prime is 239680359559. The next prime is 239680359563. The reversal of 239680359561 is 165953086932.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (239680359559) and next prime (239680359563).

It is not a de Polignac number, because 239680359561 - 2¹ = 239680359559 is a prime.

It is a super-2 number, since 2×239680359561² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (239680359563) 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, 39946726591 + ... + 39946726596.

It is an arithmetic number, because the mean of its divisors is an integer number (79893453188).

Almost surely, 2^239680359561 is an apocalyptic number.

It is an amenable number.

239680359561 is a deficient number, since it is larger than the sum of its proper divisors (79893453191).

239680359561 is an equidigital number, since it uses as much as digits as its factorization.

239680359561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79893453190.

The product of its (nonzero) digits is 10497600, while the sum is 57.

The spelling of 239680359561 in words is "two hundred thirty-nine billion, six hundred eighty million, three hundred fifty-nine thousand, five hundred sixty-one".