162451747157261 has 2 divisors, whose sum is σ = 162451747157262. Its totient is φ = 162451747157260.

The previous prime is 162451747157251. The next prime is 162451747157309. The reversal of 162451747157261 is 162751747154261.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159860873832100 + 2590873325161 = 12643610^2 + 1609619^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162451747157261 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 162451747157261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162451747157251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81225873578630 + 81225873578631.

It is an arithmetic number, because the mean of its divisors is an integer number (81225873578631).

Almost surely, 2^{162451747157261} is an apocalyptic number.

It is an amenable number.

162451747157261 is a deficient number, since it is larger than the sum of its proper divisors (1).

162451747157261 is an equidigital number, since it uses as much as digits as its factorization.

162451747157261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19756800, while the sum is 59.

The spelling of 162451747157261 in words is "one hundred sixty-two trillion, four hundred fifty-one billion, seven hundred forty-seven million, one hundred fifty-seven thousand, two hundred sixty-one".