90742554012 has 48 divisors (see below), whose sum is σ = 232744305024. Its totient is φ = 27287832000.

The previous prime is 90742553953. The next prime is 90742554013. The reversal of 90742554012 is 21045524709.

It is a super-2 number, since 2×90742554012² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90742554013) 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, 2606539 + ... + 2641122.

It is an arithmetic number, because the mean of its divisors is an integer number (4848839688).

Almost surely, 2^90742554012 is an apocalyptic number.

It is an amenable number.

90742554012 is an abundant number, since it is smaller than the sum of its proper divisors (142001751012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90742554012 is a wasteful number, since it uses less digits than its factorization.

90742554012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5247810 (or 5247808 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The spelling of 90742554012 in words is "ninety billion, seven hundred forty-two million, five hundred fifty-four thousand, twelve".