215993119881 has 32 divisors (see below), whose sum is σ = 359496539136. Its totient is φ = 112065768000.

The previous prime is 215993119801. The next prime is 215993119891. The reversal of 215993119881 is 188911399512.

It is not a de Polignac number, because 215993119881 - 2¹³ = 215993111689 is a prime.

It is a super-2 number, since 2×215993119881² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (215993119801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 389130 + ... + 763811.

It is an arithmetic number, because the mean of its divisors is an integer number (11234266848).

Almost surely, 2^215993119881 is an apocalyptic number.

215993119881 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

215993119881 is a deficient number, since it is larger than the sum of its proper divisors (143503419255).

215993119881 is a wasteful number, since it uses less digits than its factorization.

215993119881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153773.

The product of its digits is 1399680, while the sum is 57.

The spelling of 215993119881 in words is "two hundred fifteen billion, nine hundred ninety-three million, one hundred nineteen thousand, eight hundred eighty-one".