90315509213 has 16 divisors (see below), whose sum is σ = 95301298176. Its totient is φ = 85462715520.

The previous prime is 90315509209. The next prime is 90315509231. The reversal of 90315509213 is 31290551309.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 90315509213 - 2² = 90315509209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90315509813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1564145 + ... + 1620857.

It is an arithmetic number, because the mean of its divisors is an integer number (5956331136).

Almost surely, 2^90315509213 is an apocalyptic number.

It is an amenable number.

90315509213 is a deficient number, since it is larger than the sum of its proper divisors (4985788963).

90315509213 is a wasteful number, since it uses less digits than its factorization.

90315509213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57884.

The product of its (nonzero) digits is 36450, while the sum is 38.

The spelling of 90315509213 in words is "ninety billion, three hundred fifteen million, five hundred nine thousand, two hundred thirteen".