11455216831 has 8 divisors (see below), whose sum is σ = 12063230720. Its totient is φ = 10847713752.

The previous prime is 11455216819. The next prime is 11455216837. The reversal of 11455216831 is 13861255411.

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

It is a cyclic number.

It is not a de Polignac number, because 11455216831 - 2²¹ = 11453119679 is a prime.

It is a super-2 number, since 2×11455216831² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11455216837) 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, 81225 + ... + 171778.

It is an arithmetic number, because the mean of its divisors is an integer number (1507903840).

Almost surely, 2^11455216831 is an apocalyptic number.

11455216831 is a deficient number, since it is larger than the sum of its proper divisors (608013889).

11455216831 is a wasteful number, since it uses less digits than its factorization.

11455216831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255405.

The product of its digits is 28800, while the sum is 37.

The spelling of 11455216831 in words is "eleven billion, four hundred fifty-five million, two hundred sixteen thousand, eight hundred thirty-one".