90049782123 has 48 divisors (see below), whose sum is σ = 157514073600. Its totient is φ = 48425817600.

The previous prime is 90049782077. The next prime is 90049782139. The reversal of 90049782123 is 32128794009.

It is not a de Polignac number, because 90049782123 - 2⁶ = 90049782059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90049582123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68358 + ... + 429851.

It is an arithmetic number, because the mean of its divisors is an integer number (3281543200).

Almost surely, 2^90049782123 is an apocalyptic number.

90049782123 is a deficient number, since it is larger than the sum of its proper divisors (67464291477).

90049782123 is a wasteful number, since it uses less digits than its factorization.

90049782123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498392 (or 498389 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 90049782123 in words is "ninety billion, forty-nine million, seven hundred eighty-two thousand, one hundred twenty-three".