166113340263400 has 24 divisors (see below), whose sum is σ = 386213516112870. Its totient is φ = 66445336105280.

The previous prime is 166113340263347. The next prime is 166113340263421. The reversal of 166113340263400 is 4362043311661.

It can be written as a sum of positive squares in 3 ways, for example, as 116051970198564 + 50061370064836 = 10772742^2 + 7075406^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 415283350459 + ... + 415283350858.

Almost surely, 2^{166113340263400} is an apocalyptic number.

166113340263400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166113340263400 is an abundant number, since it is smaller than the sum of its proper divisors (220100175849470).

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

166113340263400 is a wasteful number, since it uses less digits than its factorization.

166113340263400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830566701333 (or 830566701324 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 40.

The spelling of 166113340263400 in words is "one hundred sixty-six trillion, one hundred thirteen billion, three hundred forty million, two hundred sixty-three thousand, four hundred".