1653166399939 has 16 divisors (see below), whose sum is σ = 1667610777600. Its totient is φ = 1638778236480.

The previous prime is 1653166399897. The next prime is 1653166399943. The reversal of 1653166399939 is 9399936613561.

It is a cyclic number.

It is not a de Polignac number, because 1653166399939 - 2³¹ = 1651018916291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1653166399949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190430679 + ... + 190439359.

It is an arithmetic number, because the mean of its divisors is an integer number (104225673600).

Almost surely, 2^{1653166399939} is an apocalyptic number.

1653166399939 is a deficient number, since it is larger than the sum of its proper divisors (14444377661).

1653166399939 is a wasteful number, since it uses less digits than its factorization.

1653166399939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11730.

The product of its digits is 191318760, while the sum is 70.

The spelling of 1653166399939 in words is "one trillion, six hundred fifty-three billion, one hundred sixty-six million, three hundred ninety-nine thousand, nine hundred thirty-nine".