1646653142264 has 64 divisors (see below), whose sum is σ = 3507768180000. Its totient is φ = 718390149120.

The previous prime is 1646653142237. The next prime is 1646653142357. The reversal of 1646653142264 is 4622413566461.

It is a happy number.

It is a super-2 number, since 2×1646653142264² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40757 + ... + 1815204.

Almost surely, 2^{1646653142264} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1646653142264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1753884090000).

1646653142264 is an abundant number, since it is smaller than the sum of its proper divisors (1861115037736).

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

1646653142264 is a wasteful number, since it uses less digits than its factorization.

1646653142264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856448 (or 1856444 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 50.

The spelling of 1646653142264 in words is "one trillion, six hundred forty-six billion, six hundred fifty-three million, one hundred forty-two thousand, two hundred sixty-four".