90910001010 has 64 divisors (see below), whose sum is σ = 223474204800. Its totient is φ = 23655959040.

The previous prime is 90910001003. The next prime is 90910001069. The reversal of 90910001010 is 1010001909.

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 31 ways as a sum of consecutive naturals, for example, 1319620 + ... + 1386800.

It is an arithmetic number, because the mean of its divisors is an integer number (3491784450).

Almost surely, 2^90910001010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90910001010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111737102400).

90910001010 is an abundant number, since it is smaller than the sum of its proper divisors (132564203790).

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

90910001010 is a wasteful number, since it uses less digits than its factorization.

90910001010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68283.

The product of its (nonzero) digits is 81, while the sum is 21.

Adding to 90910001010 its reverse (1010001909), we get a palindrome (91920002919).

The spelling of 90910001010 in words is "ninety billion, nine hundred ten million, one thousand, ten".