158178320511 has 8 divisors (see below), whose sum is σ = 210909158400. Its totient is φ = 105449848152.

The previous prime is 158178320453. The next prime is 158178320537. The reversal of 158178320511 is 115023871851.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 158178320511 - 2¹⁴ = 158178304127 is a prime.

It is a super-2 number, since 2×158178320511² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158178320561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428985 + ... + 707378.

It is an arithmetic number, because the mean of its divisors is an integer number (26363644800).

Almost surely, 2^158178320511 is an apocalyptic number.

158178320511 is a deficient number, since it is larger than the sum of its proper divisors (52730837889).

158178320511 is a wasteful number, since it uses less digits than its factorization.

158178320511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182765.

The product of its (nonzero) digits is 67200, while the sum is 42.

The spelling of 158178320511 in words is "one hundred fifty-eight billion, one hundred seventy-eight million, three hundred twenty thousand, five hundred eleven".