72166875941 has 8 divisors (see below), whose sum is σ = 72643249560. Its totient is φ = 71691558912.

The previous prime is 72166875919. The next prime is 72166875953. The reversal of 72166875941 is 14957866127.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4283178916 + 67883697025 = 65446^2 + 260545^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72166875941 - 2¹⁸ = 72166613797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72165875941) 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, 126860 + ... + 400533.

It is an arithmetic number, because the mean of its divisors is an integer number (9080406195).

Almost surely, 2^72166875941 is an apocalyptic number.

It is an amenable number.

72166875941 is a deficient number, since it is larger than the sum of its proper divisors (476373619).

72166875941 is a wasteful number, since it uses less digits than its factorization.

72166875941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528295.

The product of its digits is 5080320, while the sum is 56.

The spelling of 72166875941 in words is "seventy-two billion, one hundred sixty-six million, eight hundred seventy-five thousand, nine hundred forty-one".