3261692399616 has 416 divisors, whose sum is σ = 11054720382720. Its totient is φ = 930968764416.

The previous prime is 3261692399611. The next prime is 3261692399639. The reversal of 3261692399616 is 6169932961623.

3261692399616 is a `hidden beast` number, since 3 + 2 + 6 + 1 + 6 + 9 + 2 + 3 + 9 + 9 + 616 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3261692399611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1202244276 + ... + 1202246988.

Almost surely, 2^{3261692399616} is an apocalyptic number.

3261692399616 is a gapful number since it is divisible by the number (36) 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 3261692399616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5527360191360).

3261692399616 is an abundant number, since it is smaller than the sum of its proper divisors (7793027983104).

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

3261692399616 is a wasteful number, since it uses less digits than its factorization.

3261692399616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4306 (or 4278 counting only the distinct ones).

The product of its digits is 34012224, while the sum is 63.

The spelling of 3261692399616 in words is "three trillion, two hundred sixty-one billion, six hundred ninety-two million, three hundred ninety-nine thousand, six hundred sixteen".