166010263650 has 864 divisors, whose sum is σ = 605728730880. Its totient is φ = 31809254400.

The previous prime is 166010263633. The next prime is 166010263691. The reversal of 166010263650 is 56362010661.

166010263650 is a `hidden beast` number, since 1 + 6 + 6 + 0 + 10 + 2 + 636 + 5 + 0 = 666.

It is a super-2 number, since 2×166010263650² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 431 ways as a sum of consecutive naturals, for example, 254226724 + ... + 254227376.

It is an arithmetic number, because the mean of its divisors is an integer number (701074920).

Almost surely, 2^166010263650 is an apocalyptic number.

166010263650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 166010263650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302864365440).

166010263650 is an abundant number, since it is smaller than the sum of its proper divisors (439718467230).

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

166010263650 is a wasteful number, since it uses less digits than its factorization.

166010263650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752 (or 733 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 166010263650 in words is "one hundred sixty-six billion, ten million, two hundred sixty-three thousand, six hundred fifty".