72061055399 has 2 divisors, whose sum is σ = 72061055400. Its totient is φ = 72061055398.

The previous prime is 72061055393. The next prime is 72061055419. The reversal of 72061055399 is 99355016027.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72061055399 - 2⁴ = 72061055383 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72061055393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36030527699 + 36030527700.

It is an arithmetic number, because the mean of its divisors is an integer number (36030527700).

Almost surely, 2^72061055399 is an apocalyptic number.

72061055399 is a deficient number, since it is larger than the sum of its proper divisors (1).

72061055399 is an equidigital number, since it uses as much as digits as its factorization.

72061055399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 510300, while the sum is 47.

The spelling of 72061055399 in words is "seventy-two billion, sixty-one million, fifty-five thousand, three hundred ninety-nine".