66012460158 has 32 divisors (see below), whose sum is σ = 134317965600. Its totient is φ = 21622671360.

The previous prime is 66012460153. The next prime is 66012460183. The reversal of 66012460158 is 85106421066.

It is a happy number.

It is a super-2 number, since 2×66012460158² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66012460153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 297966 + ... + 469902.

It is an arithmetic number, because the mean of its divisors is an integer number (4197436425).

Almost surely, 2^66012460158 is an apocalyptic number.

66012460158 is an abundant number, since it is smaller than the sum of its proper divisors (68305505442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66012460158 is a wasteful number, since it uses less digits than its factorization.

66012460158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173052.

The product of its (nonzero) digits is 69120, while the sum is 39.

The spelling of 66012460158 in words is "sixty-six billion, twelve million, four hundred sixty thousand, one hundred fifty-eight".