90858515980005 has 24 divisors (see below), whose sum is σ = 157488372044640. Its totient is φ = 48457789749600.

The previous prime is 90858515979989. The next prime is 90858515980019. The reversal of 90858515980005 is 50008951585809.

It is not a de Polignac number, because 90858515980005 - 2⁴ = 90858515979989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30431230 + ... + 33283280.

It is an arithmetic number, because the mean of its divisors is an integer number (6562015501860).

Almost surely, 2^{90858515980005} is an apocalyptic number.

It is an amenable number.

90858515980005 is a deficient number, since it is larger than the sum of its proper divisors (66629856064635).

90858515980005 is a wasteful number, since it uses less digits than its factorization.

90858515980005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3560001 (or 3559998 counting only the distinct ones).

The product of its (nonzero) digits is 25920000, while the sum is 63.

The spelling of 90858515980005 in words is "ninety trillion, eight hundred fifty-eight billion, five hundred fifteen million, nine hundred eighty thousand, five".