1664092997760 has 64 divisors (see below), whose sum is σ = 5304296436480. Its totient is φ = 443758132224.

The previous prime is 1664092997759. The next prime is 1664092997761. The reversal of 1664092997760 is 677992904661.

It is an interprime number because it is at equal distance from previous prime (1664092997759) and next prime (1664092997761).

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 1664092997691 and 1664092997700.

It is not an unprimeable number, because it can be changed into a prime (1664092997761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433355632 + ... + 433359471.

It is an arithmetic number, because the mean of its divisors is an integer number (82879631820).

Almost surely, 2^{1664092997760} is an apocalyptic number.

1664092997760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1664092997760 is an abundant number, since it is smaller than the sum of its proper divisors (3640203438720).

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

1664092997760 is an equidigital number, since it uses as much as digits as its factorization.

1664092997760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866715125 (or 866715113 counting only the distinct ones).

The product of its (nonzero) digits is 61725888, while the sum is 66.

The spelling of 1664092997760 in words is "one trillion, six hundred sixty-four billion, ninety-two million, nine hundred ninety-seven thousand, seven hundred sixty".