150781411907221 has 2 divisors, whose sum is σ = 150781411907222. Its totient is φ = 150781411907220.

The previous prime is 150781411907213. The next prime is 150781411907263. The reversal of 150781411907221 is 122709114187051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107937658383025 + 42843753524196 = 10389305^2 + 6545514^2 .

It is a cyclic number.

It is not a de Polignac number, because 150781411907221 - 2³ = 150781411907213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (150781411997221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75390705953610 + 75390705953611.

It is an arithmetic number, because the mean of its divisors is an integer number (75390705953611).

Almost surely, 2^{150781411907221} is an apocalyptic number.

It is an amenable number.

150781411907221 is a deficient number, since it is larger than the sum of its proper divisors (1).

150781411907221 is an equidigital number, since it uses as much as digits as its factorization.

150781411907221 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 49.

The spelling of 150781411907221 in words is "one hundred fifty trillion, seven hundred eighty-one billion, four hundred eleven million, nine hundred seven thousand, two hundred twenty-one".