72010161 has 16 divisors (see below), whose sum is σ = 110361600. Its totient is φ = 46350864.

The previous prime is 72010153. The next prime is 72010163. The reversal of 72010161 is 16101027.

It is not a de Polignac number, because 72010161 - 2³ = 72010153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72010163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45201 + ... + 46766.

It is an arithmetic number, because the mean of its divisors is an integer number (6897600).

Almost surely, 2^72010161 is an apocalyptic number.

It is an amenable number.

72010161 is a deficient number, since it is larger than the sum of its proper divisors (38351439).

72010161 is a wasteful number, since it uses less digits than its factorization.

72010161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92005 (or 91999 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 72010161 is about 8485.8800957826. The cubic root of 72010161 is about 416.0363338118.

Adding to 72010161 its reverse (16101027), we get a palindrome (88111188).

The spelling of 72010161 in words is "seventy-two million, ten thousand, one hundred sixty-one".