90435406418 has 16 divisors (see below), whose sum is σ = 156774061440. Its totient is φ = 38322547296.

The previous prime is 90435406417. The next prime is 90435406423. The reversal of 90435406418 is 81460453409.

It is not an unprimeable number, because it can be changed into a prime (90435406417) 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, 36289046 + ... + 36291537.

It is an arithmetic number, because the mean of its divisors is an integer number (9798378840).

Almost surely, 2^90435406418 is an apocalyptic number.

90435406418 is a deficient number, since it is larger than the sum of its proper divisors (66338655022).

90435406418 is a wasteful number, since it uses less digits than its factorization.

90435406418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72580681.

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 90435406418 in words is "ninety billion, four hundred thirty-five million, four hundred six thousand, four hundred eighteen".