102666712506 has 16 divisors (see below), whose sum is σ = 208146212544. Its totient is φ = 33753439584.

The previous prime is 102666712501. The next prime is 102666712517. The reversal of 102666712506 is 605217666201.

It is a super-4 number, since 4×102666712506⁴ (a number of 45 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (102666712501) 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, 117199006 + ... + 117199881.

It is an arithmetic number, because the mean of its divisors is an integer number (13009138284).

Almost surely, 2^102666712506 is an apocalyptic number.

102666712506 is an abundant number, since it is smaller than the sum of its proper divisors (105479500038).

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

102666712506 is a wasteful number, since it uses less digits than its factorization.

102666712506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234398965.

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 102666712506 in words is "one hundred two billion, six hundred sixty-six million, seven hundred twelve thousand, five hundred six".