1655191195680 has 576 divisors, whose sum is σ = 5856140747520. Its totient is φ = 392537333760.

The previous prime is 1655191195663. The next prime is 1655191195709. The reversal of 1655191195680 is 865911915561.

It is a self number, because there is not a number n which added to its sum of digits gives 1655191195680.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1548354186 + ... + 1548355254.

It is an arithmetic number, because the mean of its divisors is an integer number (10166911020).

Almost surely, 2^{1655191195680} is an apocalyptic number.

1655191195680 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 1655191195680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2928070373760).

1655191195680 is an abundant number, since it is smaller than the sum of its proper divisors (4200949551840).

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

1655191195680 is a wasteful number, since it uses less digits than its factorization.

1655191195680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665 (or 1646 counting only the distinct ones).

The product of its (nonzero) digits is 2916000, while the sum is 57.

The spelling of 1655191195680 in words is "one trillion, six hundred fifty-five billion, one hundred ninety-one million, one hundred ninety-five thousand, six hundred eighty".