82320475550531 has 2 divisors, whose sum is σ = 82320475550532. Its totient is φ = 82320475550530.

The previous prime is 82320475550519. The next prime is 82320475550561. The reversal of 82320475550531 is 13505557402328.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82320475550531 is a prime.

It is a super-2 number, since 2×82320475550531² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 82320475550531.

It is not a weakly prime, because it can be changed into another prime (82320475550561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41160237775265 + 41160237775266.

It is an arithmetic number, because the mean of its divisors is an integer number (41160237775266).

Almost surely, 2^{82320475550531} is an apocalyptic number.

82320475550531 is a deficient number, since it is larger than the sum of its proper divisors (1).

82320475550531 is an equidigital number, since it uses as much as digits as its factorization.

82320475550531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040000, while the sum is 50.

The spelling of 82320475550531 in words is "eighty-two trillion, three hundred twenty billion, four hundred seventy-five million, five hundred fifty thousand, five hundred thirty-one".