781223260050131 has 16 divisors (see below), whose sum is σ = 826524716117760. Its totient is φ = 736340340284640.

The previous prime is 781223260050091. The next prime is 781223260050143. The reversal of 781223260050131 is 131050062322187.

It is a cyclic number.

It is not a de Polignac number, because 781223260050131 - 2¹⁰ = 781223260049107 is a prime.

It is a super-2 number, since 2×781223260050131² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (781223260055131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314699036 + ... + 317171766.

It is an arithmetic number, because the mean of its divisors is an integer number (51657794757360).

Almost surely, 2^{781223260050131} is an apocalyptic number.

781223260050131 is a deficient number, since it is larger than the sum of its proper divisors (45301456067629).

781223260050131 is a wasteful number, since it uses less digits than its factorization.

781223260050131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2557354.

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 781223260050131 in words is "seven hundred eighty-one trillion, two hundred twenty-three billion, two hundred sixty million, fifty thousand, one hundred thirty-one".