43220423097 has 8 divisors (see below), whose sum is σ = 64030256480. Its totient is φ = 28813615380.

The previous prime is 43220423023. The next prime is 43220423111. The reversal of 43220423097 is 79032402234.

It is a happy number.

43220423097 is a `hidden beast` number, since 4 + 3 + 220 + 423 + 0 + 9 + 7 = 666.

It is not a de Polignac number, because 43220423097 - 2¹⁹ = 43219898809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43220422097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 800378179 + ... + 800378232.

It is an arithmetic number, because the mean of its divisors is an integer number (8003782060).

Almost surely, 2^43220423097 is an apocalyptic number.

It is an amenable number.

43220423097 is a deficient number, since it is larger than the sum of its proper divisors (20809833383).

43220423097 is a wasteful number, since it uses less digits than its factorization.

43220423097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600756420 (or 1600756414 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The spelling of 43220423097 in words is "forty-three billion, two hundred twenty million, four hundred twenty-three thousand, ninety-seven".