90861335811 has 36 divisors (see below), whose sum is σ = 139398341472. Its totient is φ = 57020270112.

The previous prime is 90861335801. The next prime is 90861335813. The reversal of 90861335811 is 11853316809.

It is a happy number.

90861335811 is a `hidden beast` number, since 9 + 0 + 8 + 61 + 3 + 3 + 581 + 1 = 666.

It is not a de Polignac number, because 90861335811 - 2⁵ = 90861335779 is a prime.

It is a super-2 number, since 2×90861335811² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90861335813) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 421030 + ... + 599156.

It is an arithmetic number, because the mean of its divisors is an integer number (3872176152).

Almost surely, 2^90861335811 is an apocalyptic number.

90861335811 is a deficient number, since it is larger than the sum of its proper divisors (48537005661).

90861335811 is a wasteful number, since it uses less digits than its factorization.

90861335811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178328 (or 178306 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 90861335811 in words is "ninety billion, eight hundred sixty-one million, three hundred thirty-five thousand, eight hundred eleven".