72208346438 has 24 divisors (see below), whose sum is σ = 113589818136. Its totient is φ = 34417975680.

The previous prime is 72208346387. The next prime is 72208346543. The reversal of 72208346438 is 83464380227.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 72208346392 and 72208346401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 151595 + ... + 409142.

It is an arithmetic number, because the mean of its divisors is an integer number (4732909089).

Almost surely, 2^72208346438 is an apocalyptic number.

72208346438 is a deficient number, since it is larger than the sum of its proper divisors (41381471698).

72208346438 is a wasteful number, since it uses less digits than its factorization.

72208346438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560868 (or 560837 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 47.

The spelling of 72208346438 in words is "seventy-two billion, two hundred eight million, three hundred forty-six thousand, four hundred thirty-eight".