90414417638 has 4 divisors (see below), whose sum is σ = 135621626460. Its totient is φ = 45207208818.

The previous prime is 90414417623. The next prime is 90414417649. The reversal of 90414417638 is 83671441409.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83671441409 = 90647 ⋅923047.

It is a junction number, because it is equal to n+sod(n) for n = 90414417592 and 90414417601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22603604408 + ... + 22603604411.

It is an arithmetic number, because the mean of its divisors is an integer number (33905406615).

Almost surely, 2^90414417638 is an apocalyptic number.

90414417638 is a deficient number, since it is larger than the sum of its proper divisors (45207208822).

90414417638 is a wasteful number, since it uses less digits than its factorization.

90414417638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45207208821.

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 90414417638 in words is "ninety billion, four hundred fourteen million, four hundred seventeen thousand, six hundred thirty-eight".