2661666653302 has 8 divisors (see below), whose sum is σ = 4067830168416. Its totient is φ = 1305723263832.

The previous prime is 2661666653291. The next prime is 2661666653309. The reversal of 2661666653302 is 2033566661662.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2661666653302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661666653309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12555031278 + ... + 12555031489.

It is an arithmetic number, because the mean of its divisors is an integer number (508478771052).

Almost surely, 2^{2661666653302} is an apocalyptic number.

2661666653302 is a deficient number, since it is larger than the sum of its proper divisors (1406163515114).

2661666653302 is a wasteful number, since it uses less digits than its factorization.

2661666653302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25110062822.

The product of its (nonzero) digits is 8398080, while the sum is 52.

The spelling of 2661666653302 in words is "two trillion, six hundred sixty-one billion, six hundred sixty-six million, six hundred fifty-three thousand, three hundred two".