162730072546781 has 2 divisors, whose sum is σ = 162730072546782. Its totient is φ = 162730072546780.

The previous prime is 162730072546771. The next prime is 162730072546787. The reversal of 162730072546781 is 187645270037261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120347811199225 + 42382261347556 = 10970315^2 + 6510166^2 .

It is a cyclic number.

It is not a de Polignac number, because 162730072546781 - 2²⁶ = 162730005437917 is a prime.

It is a super-2 number, since 2×162730072546781² (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 162730072546781.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162730072546787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81365036273390 + 81365036273391.

It is an arithmetic number, because the mean of its divisors is an integer number (81365036273391).

Almost surely, 2^{162730072546781} is an apocalyptic number.

It is an amenable number.

162730072546781 is a deficient number, since it is larger than the sum of its proper divisors (1).

162730072546781 is an equidigital number, since it uses as much as digits as its factorization.

162730072546781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23708160, while the sum is 59.

The spelling of 162730072546781 in words is "one hundred sixty-two trillion, seven hundred thirty billion, seventy-two million, five hundred forty-six thousand, seven hundred eighty-one".