1664719607054 has 32 divisors (see below), whose sum is σ = 2908593930240. Its totient is φ = 699880281408.

The previous prime is 1664719607017. The next prime is 1664719607069. The reversal of 1664719607054 is 4507069174661.

It is a super-2 number, since 2×1664719607054² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5101802 + ... + 5418285.

It is an arithmetic number, because the mean of its divisors is an integer number (90893560320).

Almost surely, 2^{1664719607054} is an apocalyptic number.

1664719607054 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1664719607054 is a deficient number, since it is larger than the sum of its proper divisors (1243874323186).

1664719607054 is a wasteful number, since it uses less digits than its factorization.

1664719607054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10520312.

The product of its (nonzero) digits is 7620480, while the sum is 56.

The spelling of 1664719607054 in words is "one trillion, six hundred sixty-four billion, seven hundred nineteen million, six hundred seven thousand, fifty-four".