161664754267 has 16 divisors (see below), whose sum is σ = 167066468352. Its totient is φ = 156334812480.

The previous prime is 161664754249. The next prime is 161664754291. The reversal of 161664754267 is 762457466161.

It is a cyclic number.

It is not a de Polignac number, because 161664754267 - 2¹⁵ = 161664721499 is a prime.

It is a super-2 number, since 2×161664754267² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161664754297) 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, 5833638 + ... + 5861284.

It is an arithmetic number, because the mean of its divisors is an integer number (10441654272).

Almost surely, 2^161664754267 is an apocalyptic number.

161664754267 is a deficient number, since it is larger than the sum of its proper divisors (5401714085).

161664754267 is a wasteful number, since it uses less digits than its factorization.

161664754267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28938.

The product of its digits is 10160640, while the sum is 55.

The spelling of 161664754267 in words is "one hundred sixty-one billion, six hundred sixty-four million, seven hundred fifty-four thousand, two hundred sixty-seven".