90742554009 has 6 divisors (see below), whose sum is σ = 131072578026. Its totient is φ = 60495036000.

The previous prime is 90742553953. The next prime is 90742554013. The reversal of 90742554009 is 90045524709.

90742554009 is a `hidden beast` number, since 90 + 7 + 4 + 2 + 554 + 0 + 0 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 50792538384 + 39950015625 = 225372^2 + 199875^2 .

It is not a de Polignac number, because 90742554009 - 2³⁶ = 22023077273 is a prime.

It is a super-2 number, since 2×90742554009² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90742554079) 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 5 ways as a sum of consecutive naturals, for example, 5041252992 + ... + 5041253009.

It is an arithmetic number, because the mean of its divisors is an integer number (21845429671).

Almost surely, 2^90742554009 is an apocalyptic number.

It is an amenable number.

90742554009 is a deficient number, since it is larger than the sum of its proper divisors (40330024017).

90742554009 is a wasteful number, since it uses less digits than its factorization.

90742554009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10082506007 (or 10082506004 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 90742554009 in words is "ninety billion, seven hundred forty-two million, five hundred fifty-four thousand, nine".