90378461720 has 32 divisors (see below), whose sum is σ = 210363663600. Its totient is φ = 34904784768.

The previous prime is 90378461711. The next prime is 90378461731. The reversal of 90378461720 is 2716487309.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38955074 + ... + 38957393.

Almost surely, 2^90378461720 is an apocalyptic number.

It is an amenable number.

90378461720 is an abundant number, since it is smaller than the sum of its proper divisors (119985201880).

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

90378461720 is a wasteful number, since it uses less digits than its factorization.

90378461720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77912507 (or 77912503 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 47.

The spelling of 90378461720 in words is "ninety billion, three hundred seventy-eight million, four hundred sixty-one thousand, seven hundred twenty".