90381551744 has 64 divisors (see below), whose sum is σ = 206764077600. Its totient is φ = 38920273920.

The previous prime is 90381551719. The next prime is 90381551833. The reversal of 90381551744 is 44715518309.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1662497 + ... + 1716000.

Almost surely, 2^90381551744 is an apocalyptic number.

It is an amenable number.

90381551744 is an abundant number, since it is smaller than the sum of its proper divisors (116382525856).

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

90381551744 is a wasteful number, since it uses less digits than its factorization.

90381551744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3378541 (or 3378529 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 47.

It can be divided in two parts, 903815 and 51744, that added together give a palindrome (955559).

The spelling of 90381551744 in words is "ninety billion, three hundred eighty-one million, five hundred fifty-one thousand, seven hundred forty-four".