82072508573 has 4 divisors (see below), whose sum is σ = 89533645728. Its totient is φ = 74611371420.

The previous prime is 82072508533. The next prime is 82072508593. The reversal of 82072508573 is 37580527028.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82072508573 - 2¹⁴ = 82072492189 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 (82072508533) 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, 3730568561 + ... + 3730568582.

It is an arithmetic number, because the mean of its divisors is an integer number (22383411432).

Almost surely, 2^82072508573 is an apocalyptic number.

It is an amenable number.

82072508573 is a deficient number, since it is larger than the sum of its proper divisors (7461137155).

82072508573 is a wasteful number, since it uses less digits than its factorization.

82072508573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7461137154.

The product of its (nonzero) digits is 940800, while the sum is 47.

The spelling of 82072508573 in words is "eighty-two billion, seventy-two million, five hundred eight thousand, five hundred seventy-three".