72911012123 has 8 divisors (see below), whose sum is σ = 75406903296. Its totient is φ = 70424116200.

The previous prime is 72911012113. The next prime is 72911012131. The reversal of 72911012123 is 32121011927.

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 72911012123 - 2⁶ = 72911012059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72911012113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2232323 + ... + 2264748.

It is an arithmetic number, because the mean of its divisors is an integer number (9425862912).

Almost surely, 2^72911012123 is an apocalyptic number.

72911012123 is a deficient number, since it is larger than the sum of its proper divisors (2495891173).

72911012123 is a wasteful number, since it uses less digits than its factorization.

72911012123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4497625.

The product of its (nonzero) digits is 1512, while the sum is 29.

The spelling of 72911012123 in words is "seventy-two billion, nine hundred eleven million, twelve thousand, one hundred twenty-three".