151745085221 has 2 divisors, whose sum is σ = 151745085222. Its totient is φ = 151745085220.

The previous prime is 151745085197. The next prime is 151745085229. The reversal of 151745085221 is 122580547151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142812189025 + 8932896196 = 377905^2 + 94514^2 .

It is a cyclic number.

It is not a de Polignac number, because 151745085221 - 2¹⁴ = 151745068837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151745085229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75872542610 + 75872542611.

It is an arithmetic number, because the mean of its divisors is an integer number (75872542611).

Almost surely, 2^151745085221 is an apocalyptic number.

It is an amenable number.

151745085221 is a deficient number, since it is larger than the sum of its proper divisors (1).

151745085221 is an equidigital number, since it uses as much as digits as its factorization.

151745085221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112000, while the sum is 41.

The spelling of 151745085221 in words is "one hundred fifty-one billion, seven hundred forty-five million, eighty-five thousand, two hundred twenty-one".