2401666501366 has 16 divisors (see below), whose sum is σ = 4065516962640. Its totient is φ = 1054022915680.

The previous prime is 2401666501363. The next prime is 2401666501369. The reversal of 2401666501366 is 6631056661042.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2401666501363) and next prime (2401666501369).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2401666501363) 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, 1882183141 + ... + 1882184416.

It is an arithmetic number, because the mean of its divisors is an integer number (254094810165).

Almost surely, 2^{2401666501366} is an apocalyptic number.

2401666501366 is a deficient number, since it is larger than the sum of its proper divisors (1663850461274).

2401666501366 is a wasteful number, since it uses less digits than its factorization.

2401666501366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3764367599.

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 2401666501366 in words is "two trillion, four hundred one billion, six hundred sixty-six million, five hundred one thousand, three hundred sixty-six".