90919818894267 has 48 divisors (see below), whose sum is σ = 143576634364800. Its totient is φ = 54984139545600.

The previous prime is 90919818894259. The next prime is 90919818894269. The reversal of 90919818894267 is 76249881891909.

It is a happy number.

90919818894267 is a `hidden beast` number, since 9 + 0 + 9 + 1 + 9 + 8 + 188 + 9 + 426 + 7 = 666.

It is not a de Polignac number, because 90919818894267 - 2³ = 90919818894259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90919818894269) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 135102984 + ... + 135774282.

It is an arithmetic number, because the mean of its divisors is an integer number (2991179882600).

Almost surely, 2^{90919818894267} is an apocalyptic number.

90919818894267 is a deficient number, since it is larger than the sum of its proper divisors (52656815470533).

90919818894267 is a wasteful number, since it uses less digits than its factorization.

90919818894267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674264 (or 674261 counting only the distinct ones).

The product of its (nonzero) digits is 1128701952, while the sum is 81.

The spelling of 90919818894267 in words is "ninety trillion, nine hundred nineteen billion, eight hundred eighteen million, eight hundred ninety-four thousand, two hundred sixty-seven".