151706761681 has 2 divisors, whose sum is σ = 151706761682. Its totient is φ = 151706761680.

The previous prime is 151706761667. The next prime is 151706761709. The reversal of 151706761681 is 186167607151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151212099600 + 494662081 = 388860^2 + 22241^2 .

It is a cyclic number.

It is not a de Polignac number, because 151706761681 - 2¹⁷ = 151706630609 is a prime.

It is a super-2 number, since 2×151706761681² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (151706761631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75853380840 + 75853380841.

It is an arithmetic number, because the mean of its divisors is an integer number (75853380841).

Almost surely, 2^151706761681 is an apocalyptic number.

It is an amenable number.

151706761681 is a deficient number, since it is larger than the sum of its proper divisors (1).

151706761681 is an equidigital number, since it uses as much as digits as its factorization.

151706761681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 49.

The spelling of 151706761681 in words is "one hundred fifty-one billion, seven hundred six million, seven hundred sixty-one thousand, six hundred eighty-one".