1691313332100 has 144 divisors (see below), whose sum is σ = 5598041035776. Its totient is φ = 386210448000.

The previous prime is 1691313332099. The next prime is 1691313332101. The reversal of 1691313332100 is 12333131961.

It is an interprime number because it is at equal distance from previous prime (1691313332099) and next prime (1691313332101).

It is not an unprimeable number, because it can be changed into a prime (1691313332101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1774515 + ... + 2555685.

Almost surely, 2^{1691313332100} is an apocalyptic number.

1691313332100 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 1691313332100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2799020517888).

1691313332100 is an abundant number, since it is smaller than the sum of its proper divisors (3906727703676).

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

1691313332100 is a wasteful number, since it uses less digits than its factorization.

1691313332100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782226 (or 782219 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 33.

The spelling of 1691313332100 in words is "one trillion, six hundred ninety-one billion, three hundred thirteen million, three hundred thirty-two thousand, one hundred".