166537259460 has 576 divisors, whose sum is σ = 648712157184. Its totient is φ = 33940684800.

The previous prime is 166537259459. The next prime is 166537259521. The reversal of 166537259460 is 64952735661.

166537259460 is a `hidden beast` number, since 1 + 6 + 65 + 3 + 72 + 59 + 460 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 166537259397 and 166537259406.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 13558842 + ... + 13571118.

It is an arithmetic number, because the mean of its divisors is an integer number (1126236384).

Almost surely, 2^166537259460 is an apocalyptic number.

166537259460 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 166537259460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (324356078592).

166537259460 is an abundant number, since it is smaller than the sum of its proper divisors (482174897724).

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

166537259460 is a wasteful number, since it uses less digits than its factorization.

166537259460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12364 (or 12359 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 54.

The spelling of 166537259460 in words is "one hundred sixty-six billion, five hundred thirty-seven million, two hundred fifty-nine thousand, four hundred sixty".