90242144997 has 16 divisors (see below), whose sum is σ = 121788817920. Its totient is φ = 59428645232.

The previous prime is 90242144981. The next prime is 90242144999. The reversal of 90242144997 is 79944124209.

It is a cyclic number.

It is not a de Polignac number, because 90242144997 - 2⁴ = 90242144981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90242144999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2280898 + ... + 2320124.

It is an arithmetic number, because the mean of its divisors is an integer number (7611801120).

Almost surely, 2^90242144997 is an apocalyptic number.

It is an amenable number.

90242144997 is a deficient number, since it is larger than the sum of its proper divisors (31546672923).

90242144997 is a wasteful number, since it uses less digits than its factorization.

90242144997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48552.

The product of its (nonzero) digits is 1306368, while the sum is 51.

The spelling of 90242144997 in words is "ninety billion, two hundred forty-two million, one hundred forty-four thousand, nine hundred ninety-seven".