158221293511 has 2 divisors, whose sum is σ = 158221293512. Its totient is φ = 158221293510.

The previous prime is 158221293463. The next prime is 158221293553. The reversal of 158221293511 is 115392122851.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 158221293511 - 2¹¹ = 158221291463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158221297511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79110646755 + 79110646756.

It is an arithmetic number, because the mean of its divisors is an integer number (79110646756).

Almost surely, 2^158221293511 is an apocalyptic number.

158221293511 is a deficient number, since it is larger than the sum of its proper divisors (1).

158221293511 is an equidigital number, since it uses as much as digits as its factorization.

158221293511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 40.

The spelling of 158221293511 in words is "one hundred fifty-eight billion, two hundred twenty-one million, two hundred ninety-three thousand, five hundred eleven".