72156035247 has 8 divisors (see below), whose sum is σ = 97525965744. Its totient is φ = 47445064128.

The previous prime is 72156035243. The next prime is 72156035251. The reversal of 72156035247 is 74253065127.

It is an interprime number because it is at equal distance from previous prime (72156035243) and next prime (72156035251).

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

It is not a de Polignac number, because 72156035247 - 2² = 72156035243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72156035199 and 72156035208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72156035243) 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, 164739588 + ... + 164740025.

It is an arithmetic number, because the mean of its divisors is an integer number (12190745718).

Almost surely, 2^72156035247 is an apocalyptic number.

72156035247 is a deficient number, since it is larger than the sum of its proper divisors (25369930497).

72156035247 is a wasteful number, since it uses less digits than its factorization.

72156035247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329479689.

The product of its (nonzero) digits is 352800, while the sum is 42.

The spelling of 72156035247 in words is "seventy-two billion, one hundred fifty-six million, thirty-five thousand, two hundred forty-seven".