90401493361 has 4 divisors (see below), whose sum is σ = 90402141412. Its totient is φ = 90400845312.

The previous prime is 90401493323. The next prime is 90401493397. The reversal of 90401493361 is 16339410409.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 48595557136 + 41805936225 = 220444^2 + 204465^2 .

It is a cyclic number.

It is not a de Polignac number, because 90401493361 - 2²¹ = 90399396209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90401493661) 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, 19176 + ... + 425641.

It is an arithmetic number, because the mean of its divisors is an integer number (22600535353).

Almost surely, 2^90401493361 is an apocalyptic number.

It is an amenable number.

90401493361 is a deficient number, since it is larger than the sum of its proper divisors (648051).

90401493361 is a wasteful number, since it uses less digits than its factorization.

90401493361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648050.

The product of its (nonzero) digits is 69984, while the sum is 40.

The spelling of 90401493361 in words is "ninety billion, four hundred one million, four hundred ninety-three thousand, three hundred sixty-one".