66016252515167 has 32 divisors (see below), whose sum is σ = 68766348384000. Its totient is φ = 63298763297280.

The previous prime is 66016252515043. The next prime is 66016252515181. The reversal of 66016252515167 is 76151525261066.

It is a cyclic number.

It is not a de Polignac number, because 66016252515167 - 2²² = 66016248320863 is a prime.

It is a super-2 number, since 2×66016252515167² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66016252515667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19926425303 + ... + 19926428615.

It is an arithmetic number, because the mean of its divisors is an integer number (2148948387000).

Almost surely, 2^{66016252515167} is an apocalyptic number.

66016252515167 is a deficient number, since it is larger than the sum of its proper divisors (2750095868833).

66016252515167 is a wasteful number, since it uses less digits than its factorization.

66016252515167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7511.

The product of its (nonzero) digits is 4536000, while the sum is 53.

The spelling of 66016252515167 in words is "sixty-six trillion, sixteen billion, two hundred fifty-two million, five hundred fifteen thousand, one hundred sixty-seven".