72192009947 has 2 divisors, whose sum is σ = 72192009948. Its totient is φ = 72192009946.

The previous prime is 72192009913. The next prime is 72192009973. The reversal of 72192009947 is 74990029127.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72192009947 - 2²² = 72187815643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72192009895 and 72192009904.

It is not a weakly prime, because it can be changed into another prime (72192009907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36096004973 + 36096004974.

It is an arithmetic number, because the mean of its divisors is an integer number (36096004974).

Almost surely, 2^72192009947 is an apocalyptic number.

72192009947 is a deficient number, since it is larger than the sum of its proper divisors (1).

72192009947 is an equidigital number, since it uses as much as digits as its factorization.

72192009947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 571536, while the sum is 50.

The spelling of 72192009947 in words is "seventy-two billion, one hundred ninety-two million, nine thousand, nine hundred forty-seven".