72727760671 has 2 divisors, whose sum is σ = 72727760672. Its totient is φ = 72727760670.

The previous prime is 72727760669. The next prime is 72727760687. The reversal of 72727760671 is 17606772727.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72727760671 - 2¹ = 72727760669 is a prime.

Together with 72727760669, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72727760471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36363880335 + 36363880336.

It is an arithmetic number, because the mean of its divisors is an integer number (36363880336).

Almost surely, 2^72727760671 is an apocalyptic number.

72727760671 is a deficient number, since it is larger than the sum of its proper divisors (1).

72727760671 is an equidigital number, since it uses as much as digits as its factorization.

72727760671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2420208, while the sum is 52.

The spelling of 72727760671 in words is "seventy-two billion, seven hundred twenty-seven million, seven hundred sixty thousand, six hundred seventy-one".