1621343675075 has 12 divisors (see below), whose sum is σ = 2023959223200. Its totient is φ = 1288369736160.

The previous prime is 1621343675071. The next prime is 1621343675101. The reversal of 1621343675075 is 5705763431261.

It is not a de Polignac number, because 1621343675075 - 2² = 1621343675071 is a prime.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1621343675071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 217626299 + ... + 217633748.

It is an arithmetic number, because the mean of its divisors is an integer number (168663268600).

Almost surely, 2^{1621343675075} is an apocalyptic number.

1621343675075 is a deficient number, since it is larger than the sum of its proper divisors (402615548125).

1621343675075 is a wasteful number, since it uses less digits than its factorization.

1621343675075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435260206 (or 435260201 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 50.

The spelling of 1621343675075 in words is "one trillion, six hundred twenty-one billion, three hundred forty-three million, six hundred seventy-five thousand, seventy-five".