72021530670527 has 16 divisors (see below), whose sum is σ = 73011065487360. Its totient is φ = 71037998892000.

The previous prime is 72021530670457. The next prime is 72021530670539. The reversal of 72021530670527 is 72507603512027.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72021530670527 is a prime.

It is a super-2 number, since 2×72021530670527² (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 (72021130670527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 923894402 + ... + 923972352.

It is an arithmetic number, because the mean of its divisors is an integer number (4563191592960).

Almost surely, 2^{72021530670527} is an apocalyptic number.

72021530670527 is a deficient number, since it is larger than the sum of its proper divisors (989534816833).

72021530670527 is a wasteful number, since it uses less digits than its factorization.

72021530670527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116294.

The product of its (nonzero) digits is 1234800, while the sum is 47.

The spelling of 72021530670527 in words is "seventy-two trillion, twenty-one billion, five hundred thirty million, six hundred seventy thousand, five hundred twenty-seven".