90742049008777 has 4 divisors (see below), whose sum is σ = 91172106113296. Its totient is φ = 90311991904260.

The previous prime is 90742049008759. The next prime is 90742049008811. The reversal of 90742049008777 is 77780094024709.

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.

It is a cyclic number.

It is not a de Polignac number, because 90742049008777 - 2²⁷ = 90741914791049 is a prime.

It is a super-2 number, since 2×90742049008777² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90742049008717) 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, 215028551943 + ... + 215028552364.

It is an arithmetic number, because the mean of its divisors is an integer number (22793026528324).

Almost surely, 2^{90742049008777} is an apocalyptic number.

It is an amenable number.

90742049008777 is a deficient number, since it is larger than the sum of its proper divisors (430057104519).

90742049008777 is a wasteful number, since it uses less digits than its factorization.

90742049008777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430057104518.

The product of its (nonzero) digits is 49787136, while the sum is 64.

The spelling of 90742049008777 in words is "ninety trillion, seven hundred forty-two billion, forty-nine million, eight thousand, seven hundred seventy-seven".