90230897945 has 8 divisors (see below), whose sum is σ = 108278761344. Its totient is φ = 72183595824.

The previous prime is 90230897921. The next prime is 90230897959. The reversal of 90230897945 is 54979803209.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90230897945 - 2¹⁶ = 90230832409 is a prime.

It is a super-2 number, since 2×90230897945² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408512 + ... + 589358.

It is an arithmetic number, because the mean of its divisors is an integer number (13534845168).

Almost surely, 2^90230897945 is an apocalyptic number.

It is an amenable number.

90230897945 is a deficient number, since it is larger than the sum of its proper divisors (18047863399).

90230897945 is a wasteful number, since it uses less digits than its factorization.

90230897945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280639.

The product of its (nonzero) digits is 4898880, while the sum is 56.

The spelling of 90230897945 in words is "ninety billion, two hundred thirty million, eight hundred ninety-seven thousand, nine hundred forty-five".