1661625763283 has 8 divisors (see below), whose sum is σ = 1662880413696. Its totient is φ = 1660371366600.

The previous prime is 1661625763253. The next prime is 1661625763289. The reversal of 1661625763283 is 3823675261661.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1661625763283 - 2¹⁴ = 1661625746899 is a prime.

It is a super-2 number, since 2×1661625763283² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1661625763289) 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, 14242718 + ... + 14358908.

It is an arithmetic number, because the mean of its divisors is an integer number (207860051712).

Almost surely, 2^{1661625763283} is an apocalyptic number.

1661625763283 is a deficient number, since it is larger than the sum of its proper divisors (1254650413).

1661625763283 is a wasteful number, since it uses less digits than its factorization.

1661625763283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126865.

The product of its digits is 13063680, while the sum is 56.

The spelling of 1661625763283 in words is "one trillion, six hundred sixty-one billion, six hundred twenty-five million, seven hundred sixty-three thousand, two hundred eighty-three".