151515754981 has 2 divisors, whose sum is σ = 151515754982. Its totient is φ = 151515754980.

The previous prime is 151515754903. The next prime is 151515755023. The reversal of 151515754981 is 189457515151.

151515754981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121027452100 + 30488302881 = 347890^2 + 174609^2 .

It is an emirp because it is prime and its reverse (189457515151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 151515754981 - 2⁷ = 151515754853 is a prime.

It is a super-2 number, since 2×151515754981² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151515754381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75757877490 + 75757877491.

It is an arithmetic number, because the mean of its divisors is an integer number (75757877491).

Almost surely, 2^151515754981 is an apocalyptic number.

It is an amenable number.

151515754981 is a deficient number, since it is larger than the sum of its proper divisors (1).

151515754981 is an equidigital number, since it uses as much as digits as its factorization.

151515754981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260000, while the sum is 52.

The spelling of 151515754981 in words is "one hundred fifty-one billion, five hundred fifteen million, seven hundred fifty-four thousand, nine hundred eighty-one".