72523977485 has 4 divisors (see below), whose sum is σ = 87028772988. Its totient is φ = 58019181984.

The previous prime is 72523977473. The next prime is 72523977509. The reversal of 72523977485 is 58477932527.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31127192041 + 41396785444 = 176429^2 + 203462^2 .

It is a cyclic number.

It is not a de Polignac number, because 72523977485 - 2⁴ = 72523977469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7252397744 + ... + 7252397753.

It is an arithmetic number, because the mean of its divisors is an integer number (21757193247).

Almost surely, 2^72523977485 is an apocalyptic number.

It is an amenable number.

72523977485 is a deficient number, since it is larger than the sum of its proper divisors (14504795503).

72523977485 is a wasteful number, since it uses less digits than its factorization.

72523977485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14504795502.

The product of its digits is 29635200, while the sum is 59.

The spelling of 72523977485 in words is "seventy-two billion, five hundred twenty-three million, nine hundred seventy-seven thousand, four hundred eighty-five".