151720728941 has 2 divisors, whose sum is σ = 151720728942. Its totient is φ = 151720728940.

The previous prime is 151720728881. The next prime is 151720728949. The reversal of 151720728941 is 149827027151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138112573225 + 13608155716 = 371635^2 + 116654^2 .

It is an emirp because it is prime and its reverse (149827027151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 151720728941 - 2¹⁴ = 151720712557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151720728949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75860364470 + 75860364471.

It is an arithmetic number, because the mean of its divisors is an integer number (75860364471).

Almost surely, 2^151720728941 is an apocalyptic number.

It is an amenable number.

151720728941 is a deficient number, since it is larger than the sum of its proper divisors (1).

151720728941 is an equidigital number, since it uses as much as digits as its factorization.

151720728941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240, while the sum is 47.

The spelling of 151720728941 in words is "one hundred fifty-one billion, seven hundred twenty million, seven hundred twenty-eight thousand, nine hundred forty-one".