166772027400 has 192 divisors, whose sum is σ = 569169374400. Its totient is φ = 40058496000.

The previous prime is 166772027393. The next prime is 166772027459. The reversal of 166772027400 is 4720277661.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 603490 + ... + 835310.

It is an arithmetic number, because the mean of its divisors is an integer number (2964423825).

Almost surely, 2^166772027400 is an apocalyptic number.

166772027400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166772027400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284584687200).

166772027400 is an abundant number, since it is smaller than the sum of its proper divisors (402397347000).

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

166772027400 is a wasteful number, since it uses less digits than its factorization.

166772027400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231960 (or 231951 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 42.

The spelling of 166772027400 in words is "one hundred sixty-six billion, seven hundred seventy-two million, twenty-seven thousand, four hundred".