11857778656131 has 8 divisors (see below), whose sum is σ = 15844519214080. Its totient is φ = 7888111934472.

The previous prime is 11857778656123. The next prime is 11857778656189. The reversal of 11857778656131 is 13165687775811.

11857778656131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11857778656131 - 2³ = 11857778656123 is a prime.

It is a super-2 number, since 2×11857778656131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11857778676131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4268457451 + ... + 4268460228.

It is an arithmetic number, because the mean of its divisors is an integer number (1980564901760).

Almost surely, 2^{11857778656131} is an apocalyptic number.

11857778656131 is a deficient number, since it is larger than the sum of its proper divisors (3986740557949).

11857778656131 is an equidigital number, since it uses as much as digits as its factorization.

11857778656131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8536918145.

The product of its digits is 59270400, while the sum is 66.

The spelling of 11857778656131 in words is "eleven trillion, eight hundred fifty-seven billion, seven hundred seventy-eight million, six hundred fifty-six thousand, one hundred thirty-one".