90478865744 has 40 divisors (see below), whose sum is σ = 185654932800. Its totient is φ = 42626631168.

The previous prime is 90478865717. The next prime is 90478865761. The reversal of 90478865744 is 44756887409.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1810169 + ... + 1859480.

It is an arithmetic number, because the mean of its divisors is an integer number (4641373320).

Almost surely, 2^90478865744 is an apocalyptic number.

It is an amenable number.

90478865744 is an abundant number, since it is smaller than the sum of its proper divisors (95176067056).

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

90478865744 is a wasteful number, since it uses less digits than its factorization.

90478865744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3669747 (or 3669741 counting only the distinct ones).

The product of its (nonzero) digits is 54190080, while the sum is 62.

The spelling of 90478865744 in words is "ninety billion, four hundred seventy-eight million, eight hundred sixty-five thousand, seven hundred forty-four".