45198997842 has 64 divisors (see below), whose sum is σ = 92563599744. Its totient is φ = 14710325760.

The previous prime is 45198997841. The next prime is 45198997873. The reversal of 45198997842 is 24879989154.

It is a super-2 number, since 2×45198997842² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45198997841) 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, 21110092 + ... + 21112232.

It is an arithmetic number, because the mean of its divisors is an integer number (1446306246).

Almost surely, 2^45198997842 is an apocalyptic number.

45198997842 is an abundant number, since it is smaller than the sum of its proper divisors (47364601902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45198997842 is a wasteful number, since it uses less digits than its factorization.

45198997842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2683.

The product of its digits is 52254720, while the sum is 66.

The spelling of 45198997842 in words is "forty-five billion, one hundred ninety-eight million, nine hundred ninety-seven thousand, eight hundred forty-two".