158111820251 has 32 divisors (see below), whose sum is σ = 197650371072. Its totient is φ = 122877077760.

The previous prime is 158111820227. The next prime is 158111820259. The reversal of 158111820251 is 152028111851.

158111820251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 158111820251 - 2²⁶ = 158044711387 is a prime.

It is a super-3 number, since 3×158111820251³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (158111820259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60415895 + ... + 60418511.

It is an arithmetic number, because the mean of its divisors is an integer number (6176574096).

Almost surely, 2^158111820251 is an apocalyptic number.

158111820251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

158111820251 is a deficient number, since it is larger than the sum of its proper divisors (39538550821).

158111820251 is a wasteful number, since it uses less digits than its factorization.

158111820251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4419.

The product of its (nonzero) digits is 6400, while the sum is 35.

The spelling of 158111820251 in words is "one hundred fifty-eight billion, one hundred eleven million, eight hundred twenty thousand, two hundred fifty-one".