1664161603350 has 48 divisors (see below), whose sum is σ = 4127353673232. Its totient is φ = 443751384960.

The previous prime is 1664161603339. The next prime is 1664161603393. The reversal of 1664161603350 is 533061614661.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2434044 + ... + 3041856.

It is an arithmetic number, because the mean of its divisors is an integer number (85986534859).

Almost surely, 2^{1664161603350} is an apocalyptic number.

1664161603350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1664161603350 is an abundant number, since it is smaller than the sum of its proper divisors (2463192069882).

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

1664161603350 is a wasteful number, since it uses less digits than its factorization.

1664161603350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626081 (or 626076 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 42.

The spelling of 1664161603350 in words is "one trillion, six hundred sixty-four billion, one hundred sixty-one million, six hundred three thousand, three hundred fifty".