166361530434426 has 32 divisors (see below), whose sum is σ = 374256392208000. Its totient is φ = 55453843476684.

The previous prime is 166361530434391. The next prime is 166361530434427. The reversal of 166361530434426 is 624434035163661.

166361530434426 is a `hidden beast` number, since 1 + 6 + 6 + 3 + 6 + 1 + 530 + 43 + 44 + 26 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (166361530434427) 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, 19017088726 + ... + 19017097473.

It is an arithmetic number, because the mean of its divisors is an integer number (11695512256500).

Almost surely, 2^{166361530434426} is an apocalyptic number.

166361530434426 is an abundant number, since it is smaller than the sum of its proper divisors (207894861773574).

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

166361530434426 is an frugal number, since it uses more digits than its factorization.

166361530434426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38034186222 (or 38034186204 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 54.

The spelling of 166361530434426 in words is "one hundred sixty-six trillion, three hundred sixty-one billion, five hundred thirty million, four hundred thirty-four thousand, four hundred twenty-six".