99020491245 has 96 divisors (see below), whose sum is σ = 190971755520. Its totient is φ = 47133757440.

The previous prime is 99020491237. The next prime is 99020491259. The reversal of 99020491245 is 54219402099.

It is not a de Polignac number, because 99020491245 - 2³ = 99020491237 is a prime.

It is a super-2 number, since 2×99020491245² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 99020491245.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 31245021 + ... + 31248189.

It is an arithmetic number, because the mean of its divisors is an integer number (1989289120).

Almost surely, 2^99020491245 is an apocalyptic number.

It is an amenable number.

99020491245 is a deficient number, since it is larger than the sum of its proper divisors (91951264275).

99020491245 is a wasteful number, since it uses less digits than its factorization.

99020491245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4947 (or 4944 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 99020491245 in words is "ninety-nine billion, twenty million, four hundred ninety-one thousand, two hundred forty-five".