72070600991 has 2 divisors, whose sum is σ = 72070600992. Its totient is φ = 72070600990.

The previous prime is 72070600981. The next prime is 72070601003. The reversal of 72070600991 is 19900607027.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72070600991 - 2¹⁰ = 72070599967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72070600951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36035300495 + 36035300496.

It is an arithmetic number, because the mean of its divisors is an integer number (36035300496).

Almost surely, 2^72070600991 is an apocalyptic number.

72070600991 is a deficient number, since it is larger than the sum of its proper divisors (1).

72070600991 is an equidigital number, since it uses as much as digits as its factorization.

72070600991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47628, while the sum is 41.

The spelling of 72070600991 in words is "seventy-two billion, seventy million, six hundred thousand, nine hundred ninety-one".