72678726165747 has 16 divisors (see below), whose sum is σ = 104359366933920. Its totient is φ = 44725296924672.

The previous prime is 72678726165743. The next prime is 72678726165761. The reversal of 72678726165747 is 74756162787627.

It is not a de Polignac number, because 72678726165747 - 2² = 72678726165743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72678726165743) 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, 32048029 + ... + 34240817.

It is an arithmetic number, because the mean of its divisors is an integer number (6522460433370).

Almost surely, 2^{72678726165747} is an apocalyptic number.

72678726165747 is a deficient number, since it is larger than the sum of its proper divisors (31680640768173).

72678726165747 is a wasteful number, since it uses less digits than its factorization.

72678726165747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3042662.

The product of its digits is 2323399680, while the sum is 75.

The spelling of 72678726165747 in words is "seventy-two trillion, six hundred seventy-eight billion, seven hundred twenty-six million, one hundred sixty-five thousand, seven hundred forty-seven".