756426662161 has 4 divisors (see below), whose sum is σ = 756521023012. Its totient is φ = 756332301312.

The previous prime is 756426662137. The next prime is 756426662171. The reversal of 756426662161 is 161266624657.

It is a happy number.

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 416613447936 + 339813214225 = 645456^2 + 582935^2 .

It is a cyclic number.

It is not a de Polignac number, because 756426662161 - 2⁵ = 756426662129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 756426662099 and 756426662108.

It is not an unprimeable number, because it can be changed into a prime (756426662171) 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, 47168400 + ... + 47184433.

It is an arithmetic number, because the mean of its divisors is an integer number (189130255753).

Almost surely, 2^756426662161 is an apocalyptic number.

It is an amenable number.

756426662161 is a deficient number, since it is larger than the sum of its proper divisors (94360851).

756426662161 is an equidigital number, since it uses as much as digits as its factorization.

756426662161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94360850.

The product of its digits is 4354560, while the sum is 52.

The spelling of 756426662161 in words is "seven hundred fifty-six billion, four hundred twenty-six million, six hundred sixty-two thousand, one hundred sixty-one".