72912703587 has 4 divisors (see below), whose sum is σ = 97216938120. Its totient is φ = 48608469056.

The previous prime is 72912703559. The next prime is 72912703601. The reversal of 72912703587 is 78530721927.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72912703587 - 2¹⁵ = 72912670819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72912703187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12152117262 + ... + 12152117267.

It is an arithmetic number, because the mean of its divisors is an integer number (24304234530).

Almost surely, 2^72912703587 is an apocalyptic number.

72912703587 is a deficient number, since it is larger than the sum of its proper divisors (24304234533).

72912703587 is a wasteful number, since it uses less digits than its factorization.

72912703587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24304234532.

The product of its (nonzero) digits is 1481760, while the sum is 51.

The spelling of 72912703587 in words is "seventy-two billion, nine hundred twelve million, seven hundred three thousand, five hundred eighty-seven".