151781038061 has 2 divisors, whose sum is σ = 151781038062. Its totient is φ = 151781038060.

The previous prime is 151781037971. The next prime is 151781038109. The reversal of 151781038061 is 160830187151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139013394025 + 12767644036 = 372845^2 + 112994^2 .

It is an emirp because it is prime and its reverse (160830187151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 151781038061 - 2¹⁴ = 151781021677 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151781037061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75890519030 + 75890519031.

It is an arithmetic number, because the mean of its divisors is an integer number (75890519031).

Almost surely, 2^151781038061 is an apocalyptic number.

It is an amenable number.

151781038061 is a deficient number, since it is larger than the sum of its proper divisors (1).

151781038061 is an equidigital number, since it uses as much as digits as its factorization.

151781038061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 41.

The spelling of 151781038061 in words is "one hundred fifty-one billion, seven hundred eighty-one million, thirty-eight thousand, sixty-one".