72523001959 has 4 divisors (see below), whose sum is σ = 75023795160. Its totient is φ = 70022208760.

The previous prime is 72523001953. The next prime is 72523001981. The reversal of 72523001959 is 95910032527.

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 72523001959 - 2³ = 72523001951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72523001951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1250396557 + ... + 1250396614.

It is an arithmetic number, because the mean of its divisors is an integer number (18755948790).

Almost surely, 2^72523001959 is an apocalyptic number.

72523001959 is a deficient number, since it is larger than the sum of its proper divisors (2500793201).

72523001959 is a wasteful number, since it uses less digits than its factorization.

72523001959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500793200.

The product of its (nonzero) digits is 170100, while the sum is 43.

The spelling of 72523001959 in words is "seventy-two billion, five hundred twenty-three million, one thousand, nine hundred fifty-nine".