90649045742 has 4 divisors (see below), whose sum is σ = 135973568616. Its totient is φ = 45324522870.

The previous prime is 90649045741. The next prime is 90649045763. The reversal of 90649045742 is 24754094609.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24754094609 = 23 ⋅1076264983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90649045741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22662261434 + ... + 22662261437.

It is an arithmetic number, because the mean of its divisors is an integer number (33993392154).

Almost surely, 2^90649045742 is an apocalyptic number.

90649045742 is a deficient number, since it is larger than the sum of its proper divisors (45324522874).

90649045742 is a wasteful number, since it uses less digits than its factorization.

90649045742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45324522873.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 90649045742 in words is "ninety billion, six hundred forty-nine million, forty-five thousand, seven hundred forty-two".