90213052105 has 32 divisors (see below), whose sum is σ = 123163665408. Its totient is φ = 62838374400.

The previous prime is 90213052067. The next prime is 90213052109. The reversal of 90213052105 is 50125031209.

It is not a de Polignac number, because 90213052105 - 2¹⁷ = 90212921033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90213052109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107352 + ... + 438121.

It is an arithmetic number, because the mean of its divisors is an integer number (3848864544).

Almost surely, 2^90213052105 is an apocalyptic number.

It is an amenable number.

90213052105 is a deficient number, since it is larger than the sum of its proper divisors (32950613303).

90213052105 is a wasteful number, since it uses less digits than its factorization.

90213052105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545617.

The product of its (nonzero) digits is 2700, while the sum is 28.

The spelling of 90213052105 in words is "ninety billion, two hundred thirteen million, fifty-two thousand, one hundred five".