3666167403840 has 224 divisors, whose sum is σ = 13350632094720. Its totient is φ = 946107648000.

The previous prime is 3666167403721. The next prime is 3666167403859. The reversal of 3666167403840 is 483047616663.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6576111 + ... + 7111790.

Almost surely, 2^{3666167403840} is an apocalyptic number.

3666167403840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3666167403840 is an abundant number, since it is smaller than the sum of its proper divisors (9684464690880).

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

3666167403840 is a wasteful number, since it uses less digits than its factorization.

3666167403840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13687958 (or 13687942 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 54.

The spelling of 3666167403840 in words is "three trillion, six hundred sixty-six billion, one hundred sixty-seven million, four hundred three thousand, eight hundred forty".