1423764849661 has 8 divisors (see below), whose sum is σ = 1775083449024. Its totient is φ = 1109427155520.

The previous prime is 1423764849643. The next prime is 1423764849667. The reversal of 1423764849661 is 1669484673241.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1423764849661 - 2¹⁵ = 1423764816893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1423764849661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423764849667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9245226220 + ... + 9245226373.

It is an arithmetic number, because the mean of its divisors is an integer number (221885431128).

Almost surely, 2^{1423764849661} is an apocalyptic number.

1423764849661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1423764849661 is a deficient number, since it is larger than the sum of its proper divisors (351318599363).

1423764849661 is a wasteful number, since it uses less digits than its factorization.

1423764849661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18490452611.

The product of its digits is 41803776, while the sum is 61.

The spelling of 1423764849661 in words is "one trillion, four hundred twenty-three billion, seven hundred sixty-four million, eight hundred forty-nine thousand, six hundred sixty-one".