6661090373 has 16 divisors (see below), whose sum is σ = 7862722560. Its totient is φ = 5522180400.

The previous prime is 6661090363. The next prime is 6661090391. The reversal of 6661090373 is 3730901666.

It is a cyclic number.

It is not a de Polignac number, because 6661090373 - 2⁶ = 6661090309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6661090373.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6661090363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 421688 + ... + 437198.

It is an arithmetic number, because the mean of its divisors is an integer number (491420160).

Almost surely, 2^6661090373 is an apocalyptic number.

It is an amenable number.

6661090373 is a deficient number, since it is larger than the sum of its proper divisors (1201632187).

6661090373 is a wasteful number, since it uses less digits than its factorization.

6661090373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17528.

The product of its (nonzero) digits is 122472, while the sum is 41.

The square root of 6661090373 is about 81615.5032637795. The cubic root of 6661090373 is about 1881.5471620614.

The spelling of 6661090373 in words is "six billion, six hundred sixty-one million, ninety thousand, three hundred seventy-three".