90132648842 has 4 divisors (see below), whose sum is σ = 135198973266. Its totient is φ = 45066324420.

The previous prime is 90132648839. The next prime is 90132648877. The reversal of 90132648842 is 24884623109.

It is a Cunningham number, because it is equal to 300221²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24884623109 = 24697 ⋅1007597.

It can be written as a sum of positive squares in only one way, i.e., 90132648841 + 1 = 300221^2 + 1^2 .

It is a super-3 number, since 3×90132648842³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22533162209 + ... + 22533162212.

Almost surely, 2^90132648842 is an apocalyptic number.

90132648842 is a deficient number, since it is larger than the sum of its proper divisors (45066324424).

90132648842 is a wasteful number, since it uses less digits than its factorization.

90132648842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45066324423.

The product of its (nonzero) digits is 663552, while the sum is 47.

The spelling of 90132648842 in words is "ninety billion, one hundred thirty-two million, six hundred forty-eight thousand, eight hundred forty-two".