781160474291 has 4 divisors (see below), whose sum is σ = 808097042400. Its totient is φ = 754223906184.

The previous prime is 781160474279. The next prime is 781160474317. The reversal of 781160474291 is 192474061187.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-781160474291 is a prime.

It is a super-2 number, since 2×781160474291² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (781160474201) 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, 13468284011 + ... + 13468284068.

It is an arithmetic number, because the mean of its divisors is an integer number (202024260600).

Almost surely, 2^781160474291 is an apocalyptic number.

781160474291 is a deficient number, since it is larger than the sum of its proper divisors (26936568109).

781160474291 is a wasteful number, since it uses less digits than its factorization.

781160474291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26936568108.

The product of its (nonzero) digits is 677376, while the sum is 50.

The spelling of 781160474291 in words is "seven hundred eighty-one billion, one hundred sixty million, four hundred seventy-four thousand, two hundred ninety-one".