1620116020687 has 8 divisors (see below), whose sum is σ = 1628850240000. Its totient is φ = 1611395811864.

The previous prime is 1620116020651. The next prime is 1620116020703. The reversal of 1620116020687 is 7860206110261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1620116020687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620116026687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3270687 + ... + 3733312.

It is an arithmetic number, because the mean of its divisors is an integer number (203606280000).

Almost surely, 2^{1620116020687} is an apocalyptic number.

1620116020687 is a deficient number, since it is larger than the sum of its proper divisors (8734219313).

1620116020687 is a wasteful number, since it uses less digits than its factorization.

1620116020687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7005245.

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 1620116020687 in words is "one trillion, six hundred twenty billion, one hundred sixteen million, twenty thousand, six hundred eighty-seven".