166050423065640 has 32 divisors (see below), whose sum is σ = 498151269197280. Its totient is φ = 44280112817472.

The previous prime is 166050423065633. The next prime is 166050423065771. The reversal of 166050423065640 is 46560324050661.

It is a self number, because there is not a number n which added to its sum of digits gives 166050423065640.

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, 691876762654 + ... + 691876762893.

It is an arithmetic number, because the mean of its divisors is an integer number (15567227162415).

Almost surely, 2^{166050423065640} is an apocalyptic number.

166050423065640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166050423065640 is an abundant number, since it is smaller than the sum of its proper divisors (332100846131640).

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

166050423065640 is a wasteful number, since it uses less digits than its factorization.

166050423065640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383753525561 (or 1383753525557 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 48.

The spelling of 166050423065640 in words is "one hundred sixty-six trillion, fifty billion, four hundred twenty-three million, sixty-five thousand, six hundred forty".