43199918157 has 96 divisors (see below), whose sum is σ = 69536911360. Its totient is φ = 23744793600.

The previous prime is 43199918117. The next prime is 43199918183. The reversal of 43199918157 is 75181999134.

It is a happy number.

It is not a de Polignac number, because 43199918157 - 2²⁸ = 42931482701 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 43199918097 and 43199918106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43199918117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 20738238 + ... + 20740320.

Almost surely, 2^43199918157 is an apocalyptic number.

It is an amenable number.

43199918157 is a deficient number, since it is larger than the sum of its proper divisors (26336993203).

43199918157 is a wasteful number, since it uses less digits than its factorization.

43199918157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2255 (or 2244 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 57.

The spelling of 43199918157 in words is "forty-three billion, one hundred ninety-nine million, nine hundred eighteen thousand, one hundred fifty-seven".