90935517541 has 4 divisors (see below), whose sum is σ = 99202382784. Its totient is φ = 82668652300.

The previous prime is 90935517461. The next prime is 90935517553. The reversal of 90935517541 is 14571553909.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14571553909 = 11 ⋅1324686719.

It is a cyclic number.

It is not a de Polignac number, because 90935517541 - 2²⁵ = 90901963109 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90935517571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4133432605 + ... + 4133432626.

It is an arithmetic number, because the mean of its divisors is an integer number (24800595696).

Almost surely, 2^90935517541 is an apocalyptic number.

It is an amenable number.

90935517541 is a deficient number, since it is larger than the sum of its proper divisors (8266865243).

90935517541 is a wasteful number, since it uses less digits than its factorization.

90935517541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8266865242.

The product of its (nonzero) digits is 850500, while the sum is 49.

The spelling of 90935517541 in words is "ninety billion, nine hundred thirty-five million, five hundred seventeen thousand, five hundred forty-one".