90653790427 has 4 divisors (see below), whose sum is σ = 94595259600. Its totient is φ = 86712321256.

The previous prime is 90653790373. The next prime is 90653790431. The reversal of 90653790427 is 72409735609.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72409735609 = 109 ⋅664309501.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90653790427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90653790467) 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, 1970734552 + ... + 1970734597.

It is an arithmetic number, because the mean of its divisors is an integer number (23648814900).

Almost surely, 2^90653790427 is an apocalyptic number.

90653790427 is a deficient number, since it is larger than the sum of its proper divisors (3941469173).

90653790427 is a wasteful number, since it uses less digits than its factorization.

90653790427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3941469172.

The product of its (nonzero) digits is 2857680, while the sum is 52.

The spelling of 90653790427 in words is "ninety billion, six hundred fifty-three million, seven hundred ninety thousand, four hundred twenty-seven".