72743182172387 has 16 divisors (see below), whose sum is σ = 73628751727872. Its totient is φ = 71861469068640.

The previous prime is 72743182172341. The next prime is 72743182172417. The reversal of 72743182172387 is 78327128134727.

It is a cyclic number.

It is not a de Polignac number, because 72743182172387 - 2⁴⁴ = 55150996127971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72743182172317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 344206562 + ... + 344417832.

It is an arithmetic number, because the mean of its divisors is an integer number (4601796982992).

Almost surely, 2^{72743182172387} is an apocalyptic number.

72743182172387 is a deficient number, since it is larger than the sum of its proper divisors (885569555485).

72743182172387 is a wasteful number, since it uses less digits than its factorization.

72743182172387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220378.

The product of its digits is 44255232, while the sum is 62.

The spelling of 72743182172387 in words is "seventy-two trillion, seven hundred forty-three billion, one hundred eighty-two million, one hundred seventy-two thousand, three hundred eighty-seven".