3659855861376 has 2304 divisors, whose sum is σ = 14158302412800. Its totient is φ = 931179110400.

The previous prime is 3659855861371. The next prime is 3659855861479. The reversal of 3659855861376 is 6731685589563.

3659855861376 is a `hidden beast` number, since 3 + 6 + 5 + 9 + 8 + 5 + 586 + 1 + 37 + 6 = 666.

It is a super-2 number, since 2×3659855861376² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (3659855861371) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 28817762625 + ... + 28817762751.

Almost surely, 2^{3659855861376} is an apocalyptic number.

3659855861376 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 3659855861376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7079151206400).

3659855861376 is an abundant number, since it is smaller than the sum of its proper divisors (10498446551424).

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

3659855861376 is a wasteful number, since it uses less digits than its factorization.

3659855861376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 206 counting only the distinct ones).

The product of its digits is 979776000, while the sum is 72.

The spelling of 3659855861376 in words is "three trillion, six hundred fifty-nine billion, eight hundred fifty-five million, eight hundred sixty-one thousand, three hundred seventy-six".