90649193472 has 352 divisors, whose sum is σ = 277789363200. Its totient is φ = 29185228800.

The previous prime is 90649193447. The next prime is 90649193489. The reversal of 90649193472 is 27439194609.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99504697 + ... + 99505607.

Almost surely, 2^90649193472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90649193472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138894681600).

90649193472 is an abundant number, since it is smaller than the sum of its proper divisors (187140169728).

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

90649193472 is a wasteful number, since it uses less digits than its factorization.

90649193472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060 (or 1036 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The spelling of 90649193472 in words is "ninety billion, six hundred forty-nine million, one hundred ninety-three thousand, four hundred seventy-two".