72643387711 has 8 divisors (see below), whose sum is σ = 74610098624. Its totient is φ = 70676854560.

The previous prime is 72643387699. The next prime is 72643387723. The reversal of 72643387711 is 11778334627.

It is an interprime number because it is at equal distance from previous prime (72643387699) and next prime (72643387723).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72643387711 - 2⁹ = 72643387199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72643387111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1502941 + ... + 1550521.

It is an arithmetic number, because the mean of its divisors is an integer number (9326262328).

Almost surely, 2^72643387711 is an apocalyptic number.

72643387711 is a deficient number, since it is larger than the sum of its proper divisors (1966710913).

72643387711 is a wasteful number, since it uses less digits than its factorization.

72643387711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88881.

The product of its digits is 1185408, while the sum is 49.

The spelling of 72643387711 in words is "seventy-two billion, six hundred forty-three million, three hundred eighty-seven thousand, seven hundred eleven".