90180428078 has 32 divisors (see below), whose sum is σ = 147030159360. Its totient is φ = 41236322400.

The previous prime is 90180428069. The next prime is 90180428081. The reversal of 90180428078 is 87082408109.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1457651 + ... + 1518257.

It is an arithmetic number, because the mean of its divisors is an integer number (4594692480).

Almost surely, 2^90180428078 is an apocalyptic number.

90180428078 is a deficient number, since it is larger than the sum of its proper divisors (56849731282).

90180428078 is a wasteful number, since it uses less digits than its factorization.

90180428078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61152.

The product of its (nonzero) digits is 258048, while the sum is 47.

The spelling of 90180428078 in words is "ninety billion, one hundred eighty million, four hundred twenty-eight thousand, seventy-eight".