1646477140472 has 16 divisors (see below), whose sum is σ = 3145392651240. Its totient is φ = 807705766816.

The previous prime is 1646477140453. The next prime is 1646477140501. The reversal of 1646477140472 is 2740417746461.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1941599978 + ... + 1941600825.

Almost surely, 2^{1646477140472} is an apocalyptic number.

It is an amenable number.

1646477140472 is a deficient number, since it is larger than the sum of its proper divisors (1498915510768).

1646477140472 is a wasteful number, since it uses less digits than its factorization.

1646477140472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3883200862 (or 3883200858 counting only the distinct ones).

The product of its (nonzero) digits is 6322176, while the sum is 53.

The spelling of 1646477140472 in words is "one trillion, six hundred forty-six billion, four hundred seventy-seven million, one hundred forty thousand, four hundred seventy-two".