3696647185980 has 336 divisors, whose sum is σ = 13760540176320. Its totient is φ = 815811139584.

The previous prime is 3696647185969. The next prime is 3696647186081. The reversal of 3696647185980 is 895817466963.

3696647185980 is a `hidden beast` number, since 3 + 6 + 9 + 66 + 471 + 8 + 5 + 98 + 0 = 666.

It is a super-2 number, since 2×3696647185980² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3696647185899 and 3696647185908.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 2335252 + ... + 3584228.

It is an arithmetic number, because the mean of its divisors is an integer number (40953988620).

Almost surely, 2^{3696647185980} is an apocalyptic number.

3696647185980 is a gapful number since it is divisible by the number (30) 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 3696647185980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6880270088160).

3696647185980 is an abundant number, since it is smaller than the sum of its proper divisors (10063892990340).

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

3696647185980 is a wasteful number, since it uses less digits than its factorization.

3696647185980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249040 (or 1249023 counting only the distinct ones).

The product of its (nonzero) digits is 470292480, while the sum is 72.

The spelling of 3696647185980 in words is "three trillion, six hundred ninety-six billion, six hundred forty-seven million, one hundred eighty-five thousand, nine hundred eighty".