72127056769 has 8 divisors (see below), whose sum is σ = 73147612032. Its totient is φ = 71106631680.

The previous prime is 72127056767. The next prime is 72127056791. The reversal of 72127056769 is 96765072127.

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 72127056769 - 2¹ = 72127056767 is a prime.

It is a super-2 number, since 2×72127056769² (a number of 23 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72127056767) 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, 1834572 + ... + 1873474.

It is an arithmetic number, because the mean of its divisors is an integer number (9143451504).

Almost surely, 2^72127056769 is an apocalyptic number.

It is an amenable number.

72127056769 is a deficient number, since it is larger than the sum of its proper divisors (1020555263).

72127056769 is a wasteful number, since it uses less digits than its factorization.

72127056769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65087.

The product of its (nonzero) digits is 2222640, while the sum is 52.

The spelling of 72127056769 in words is "seventy-two billion, one hundred twenty-seven million, fifty-six thousand, seven hundred sixty-nine".