761135856361 has 4 divisors (see below), whose sum is σ = 805908553812. Its totient is φ = 716363158912.

The previous prime is 761135856343. The next prime is 761135856373. The reversal of 761135856361 is 163658531167.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 163658531167 = 31 ⋅5279307457.

It can be written as a sum of positive squares in 2 ways, for example, as 659374856361 + 101761000000 = 812019^2 + 319000^2 .

It is a cyclic number.

It is not a de Polignac number, because 761135856361 - 2¹³ = 761135848169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 761135856299 and 761135856308.

It is not an unprimeable number, because it can be changed into a prime (761135856301) 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, 22386348700 + ... + 22386348733.

It is an arithmetic number, because the mean of its divisors is an integer number (201477138453).

Almost surely, 2^761135856361 is an apocalyptic number.

It is an amenable number.

761135856361 is a deficient number, since it is larger than the sum of its proper divisors (44772697451).

761135856361 is a wasteful number, since it uses less digits than its factorization.

761135856361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44772697450.

The product of its digits is 2721600, while the sum is 52.

The spelling of 761135856361 in words is "seven hundred sixty-one billion, one hundred thirty-five million, eight hundred fifty-six thousand, three hundred sixty-one".