90215974741 has 4 divisors (see below), whose sum is σ = 90216692352. Its totient is φ = 90215257132.

The previous prime is 90215974727. The next prime is 90215974787. The reversal of 90215974741 is 14747951209.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 90215974741 - 2⁷ = 90215974613 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 (90215974711) 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, 115015 + ... + 440068.

It is an arithmetic number, because the mean of its divisors is an integer number (22554173088).

Almost surely, 2^90215974741 is an apocalyptic number.

It is an amenable number.

90215974741 is a deficient number, since it is larger than the sum of its proper divisors (717611).

90215974741 is a wasteful number, since it uses less digits than its factorization.

90215974741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717610.

The product of its (nonzero) digits is 635040, while the sum is 49.

The spelling of 90215974741 in words is "ninety billion, two hundred fifteen million, nine hundred seventy-four thousand, seven hundred forty-one".