90155338560 has 336 divisors, whose sum is σ = 358057679616. Its totient is φ = 20394049536.

The previous prime is 90155338549. The next prime is 90155338573. The reversal of 90155338560 is 6583355109.

90155338560 is a `hidden beast` number, since 9 + 0 + 1 + 5 + 53 + 38 + 560 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (45).

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 47 ways as a sum of consecutive naturals, for example, 1932469 + ... + 1978571.

It is an arithmetic number, because the mean of its divisors is an integer number (1065647856).

Almost surely, 2^90155338560 is an apocalyptic number.

90155338560 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90155338560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179028839808).

90155338560 is an abundant number, since it is smaller than the sum of its proper divisors (267902341056).

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

90155338560 is a wasteful number, since it uses less digits than its factorization.

90155338560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46230 (or 46217 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 45.

The spelling of 90155338560 in words is "ninety billion, one hundred fifty-five million, three hundred thirty-eight thousand, five hundred sixty".