72348433857 has 96 divisors (see below), whose sum is σ = 125602340864. Its totient is φ = 39261024000.

The previous prime is 72348433853. The next prime is 72348433867. The reversal of 72348433857 is 75833484327.

It is not a de Polignac number, because 72348433857 - 2² = 72348433853 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72348433853) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 40170357 + ... + 40172157.

Almost surely, 2^72348433857 is an apocalyptic number.

It is an amenable number.

72348433857 is a deficient number, since it is larger than the sum of its proper divisors (53253907007).

72348433857 is a wasteful number, since it uses less digits than its factorization.

72348433857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2219 (or 2216 counting only the distinct ones).

The product of its digits is 13547520, while the sum is 54.

The spelling of 72348433857 in words is "seventy-two billion, three hundred forty-eight million, four hundred thirty-three thousand, eight hundred fifty-seven".