72530082673637 has 4 divisors (see below), whose sum is σ = 72533725041900. Its totient is φ = 72526440305376.

The previous prime is 72530082673583. The next prime is 72530082673649. The reversal of 72530082673637 is 73637628003527.

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 1464356531236 + 71065726142401 = 1210106^2 + 8430049^2 .

It is a cyclic number.

It is not a de Polignac number, because 72530082673637 - 2²² = 72530078479333 is a prime.

It is a super-2 number, since 2×72530082673637² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72530082673537) 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, 1821154262 + ... + 1821194087.

It is an arithmetic number, because the mean of its divisors is an integer number (18133431260475).

Almost surely, 2^{72530082673637} is an apocalyptic number.

It is an amenable number.

72530082673637 is a deficient number, since it is larger than the sum of its proper divisors (3642368263).

72530082673637 is a wasteful number, since it uses less digits than its factorization.

72530082673637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3642368262.

The product of its (nonzero) digits is 53343360, while the sum is 59.

The spelling of 72530082673637 in words is "seventy-two trillion, five hundred thirty billion, eighty-two million, six hundred seventy-three thousand, six hundred thirty-seven".