166018299424 has 24 divisors (see below), whose sum is σ = 327099837708. Its totient is φ = 82945324800.

The previous prime is 166018299409. The next prime is 166018299431. The reversal of 166018299424 is 424992810661.

It can be written as a sum of positive squares in 2 ways, for example, as 118520455824 + 47497843600 = 344268^2 + 217940^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1952247 + ... + 2035510.

Almost surely, 2^166018299424 is an apocalyptic number.

It is an amenable number.

166018299424 is a deficient number, since it is larger than the sum of its proper divisors (161081538284).

166018299424 is a wasteful number, since it uses less digits than its factorization.

166018299424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3989068 (or 3989060 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 52.

The spelling of 166018299424 in words is "one hundred sixty-six billion, eighteen million, two hundred ninety-nine thousand, four hundred twenty-four".