1698866495040 has 448 divisors, whose sum is σ = 6341138399232. Its totient is φ = 379911168000.

The previous prime is 1698866495021. The next prime is 1698866495059. The reversal of 1698866495040 is 405946688961.

It is an interprime number because it is at equal distance from previous prime (1698866495021) and next prime (1698866495059).

It is a super-2 number, since 2×1698866495040² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 267830109 + ... + 267836451.

It is an arithmetic number, because the mean of its divisors is an integer number (14154326784).

Almost surely, 2^{1698866495040} is an apocalyptic number.

1698866495040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1698866495040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3170569199616).

1698866495040 is an abundant number, since it is smaller than the sum of its proper divisors (4642271904192).

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

1698866495040 is a wasteful number, since it uses less digits than its factorization.

1698866495040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8338 (or 8328 counting only the distinct ones).

The product of its (nonzero) digits is 89579520, while the sum is 66.

The spelling of 1698866495040 in words is "one trillion, six hundred ninety-eight billion, eight hundred sixty-six million, four hundred ninety-five thousand, forty".