761291622449 has 4 divisors (see below), whose sum is σ = 763190105700. Its totient is φ = 759393139200.

The previous prime is 761291622409. The next prime is 761291622467. The reversal of 761291622449 is 944226192167.

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 645941727025 + 115349895424 = 803705^2 + 339632^2 .

It is a cyclic number.

It is not a de Polignac number, because 761291622449 - 2²⁰ = 761290573873 is a prime.

It is a super-2 number, since 2×761291622449² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 761291622449.

It is not an unprimeable number, because it can be changed into a prime (761291622409) 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, 949241024 + ... + 949241825.

It is an arithmetic number, because the mean of its divisors is an integer number (190797526425).

Almost surely, 2^761291622449 is an apocalyptic number.

It is an amenable number.

761291622449 is a deficient number, since it is larger than the sum of its proper divisors (1898483251).

761291622449 is a wasteful number, since it uses less digits than its factorization.

761291622449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898483250.

The product of its digits is 2612736, while the sum is 53.

The spelling of 761291622449 in words is "seven hundred sixty-one billion, two hundred ninety-one million, six hundred twenty-two thousand, four hundred forty-nine".