72297166245 has 48 divisors (see below), whose sum is σ = 123524932608. Its totient is φ = 36099927040.

The previous prime is 72297166223. The next prime is 72297166273. The reversal of 72297166245 is 54266179227.

It is not a de Polignac number, because 72297166245 - 2¹² = 72297162149 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 784327 + ... + 871643.

It is an arithmetic number, because the mean of its divisors is an integer number (2573436096).

Almost surely, 2^72297166245 is an apocalyptic number.

It is an amenable number.

72297166245 is a deficient number, since it is larger than the sum of its proper divisors (51227766363).

72297166245 is a wasteful number, since it uses less digits than its factorization.

72297166245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87550 (or 87533 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 51.

The spelling of 72297166245 in words is "seventy-two billion, two hundred ninety-seven million, one hundred sixty-six thousand, two hundred forty-five".