72681241455 has 12 divisors (see below), whose sum is σ = 125980818600. Its totient is φ = 38763328752.

The previous prime is 72681241441. The next prime is 72681241469. The reversal of 72681241455 is 55414218627.

72681241455 is a `hidden beast` number, since 72 + 6 + 8 + 124 + 1 + 455 = 666.

It is an interprime number because it is at equal distance from previous prime (72681241441) and next prime (72681241469).

It is not a de Polignac number, because 72681241455 - 2⁴ = 72681241439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1615138699 = 72681241455 / (7 + 2 + 6 + 8 + 1 + 2 + 4 + 1 + 4 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 72681241455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 807569305 + ... + 807569394.

It is an arithmetic number, because the mean of its divisors is an integer number (10498401550).

Almost surely, 2^72681241455 is an apocalyptic number.

72681241455 is a deficient number, since it is larger than the sum of its proper divisors (53299577145).

72681241455 is a wasteful number, since it uses less digits than its factorization.

72681241455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1615138710 (or 1615138707 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The spelling of 72681241455 in words is "seventy-two billion, six hundred eighty-one million, two hundred forty-one thousand, four hundred fifty-five".