166612421346 has 16 divisors (see below), whose sum is σ = 380828391744. Its totient is φ = 47603548944.

The previous prime is 166612421329. The next prime is 166612421351. The reversal of 166612421346 is 643124216661.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 3966962413 = 166612421346 / (1 + 6 + 6 + 6 + 1 + 2 + 4 + 2 + 1 + 3 + 4 + 6).

It is a junction number, because it is equal to n+sod(n) for n = 166612421298 and 166612421307.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1983481165 + ... + 1983481248.

It is an arithmetic number, because the mean of its divisors is an integer number (23801774484).

Almost surely, 2^166612421346 is an apocalyptic number.

166612421346 is an abundant number, since it is smaller than the sum of its proper divisors (214215970398).

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

166612421346 is a wasteful number, since it uses less digits than its factorization.

166612421346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3966962425.

The product of its digits is 248832, while the sum is 42.

The spelling of 166612421346 in words is "one hundred sixty-six billion, six hundred twelve million, four hundred twenty-one thousand, three hundred forty-six".