72230247401 has 4 divisors (see below), whose sum is σ = 77786420292. Its totient is φ = 66674074512.

The previous prime is 72230247367. The next prime is 72230247407. The reversal of 72230247401 is 10474203227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10474203227 = 7789 ⋅1344743.

It can be written as a sum of positive squares in 2 ways, for example, as 43363897600 + 28866349801 = 208240^2 + 169901^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72230247401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72230247407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2778086426 + ... + 2778086451.

It is an arithmetic number, because the mean of its divisors is an integer number (19446605073).

Almost surely, 2^72230247401 is an apocalyptic number.

It is an amenable number.

72230247401 is a deficient number, since it is larger than the sum of its proper divisors (5556172891).

72230247401 is a wasteful number, since it uses less digits than its factorization.

72230247401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5556172890.

The product of its (nonzero) digits is 18816, while the sum is 32.

The spelling of 72230247401 in words is "seventy-two billion, two hundred thirty million, two hundred forty-seven thousand, four hundred one".