201512646166 has 8 divisors (see below), whose sum is σ = 325520428464. Its totient is φ = 93005836680.

The previous prime is 201512646151. The next prime is 201512646169. The reversal of 201512646166 is 661646215102.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201512646169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3875243170 + ... + 3875243221.

It is an arithmetic number, because the mean of its divisors is an integer number (40690053558).

Almost surely, 2^201512646166 is an apocalyptic number.

201512646166 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

201512646166 is a deficient number, since it is larger than the sum of its proper divisors (124007782298).

201512646166 is a wasteful number, since it uses less digits than its factorization.

201512646166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7750486406.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 201512646166 in words is "two hundred one billion, five hundred twelve million, six hundred forty-six thousand, one hundred sixty-six".