1666513054754 has 16 divisors (see below), whose sum is σ = 2504805633600. Its totient is φ = 831578411664.

The previous prime is 1666513054753. The next prime is 1666513054763. The reversal of 1666513054754 is 4574503156661.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1666513054696 and 1666513054705.

It is not an unprimeable number, because it can be changed into a prime (1666513054753) 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, 5855012 + ... + 6133040.

It is an arithmetic number, because the mean of its divisors is an integer number (156550352100).

Almost surely, 2^{1666513054754} is an apocalyptic number.

1666513054754 is a deficient number, since it is larger than the sum of its proper divisors (838292578846).

1666513054754 is a wasteful number, since it uses less digits than its factorization.

1666513054754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284057.

The product of its (nonzero) digits is 9072000, while the sum is 53.

The spelling of 1666513054754 in words is "one trillion, six hundred sixty-six billion, five hundred thirteen million, fifty-four thousand, seven hundred fifty-four".