72950871187 has 2 divisors, whose sum is σ = 72950871188. Its totient is φ = 72950871186.

The previous prime is 72950871167. The next prime is 72950871199. The reversal of 72950871187 is 78117805927.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72950871187 is a prime.

It is not a weakly prime, because it can be changed into another prime (72950871157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36475435593 + 36475435594.

It is an arithmetic number, because the mean of its divisors is an integer number (36475435594).

Almost surely, 2^72950871187 is an apocalyptic number.

72950871187 is a deficient number, since it is larger than the sum of its proper divisors (1).

72950871187 is an equidigital number, since it uses as much as digits as its factorization.

72950871187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1975680, while the sum is 55.

The spelling of 72950871187 in words is "seventy-two billion, nine hundred fifty million, eight hundred seventy-one thousand, one hundred eighty-seven".