1620746514275 has 18 divisors (see below), whose sum is σ = 2337844157460. Its totient is φ = 1111369037520.

The previous prime is 1620746514263. The next prime is 1620746514371. The reversal of 1620746514275 is 5724156470261.

It is a happy number.

It is not a de Polignac number, because 1620746514275 - 2⁴ = 1620746514259 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 661527965 + ... + 661530414.

It is an arithmetic number, because the mean of its divisors is an integer number (129880230970).

Almost surely, 2^{1620746514275} is an apocalyptic number.

1620746514275 is a deficient number, since it is larger than the sum of its proper divisors (717097643185).

1620746514275 is a wasteful number, since it uses less digits than its factorization.

1620746514275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323058403 (or 1323058391 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 50.

The spelling of 1620746514275 in words is "one trillion, six hundred twenty billion, seven hundred forty-six million, five hundred fourteen thousand, two hundred seventy-five".