1423155466551 has 32 divisors (see below), whose sum is σ = 2389747064320. Its totient is φ = 733217837184.

The previous prime is 1423155466547. The next prime is 1423155466573. The reversal of 1423155466551 is 1556645513241.

It is not a de Polignac number, because 1423155466551 - 2² = 1423155466547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1423155466551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423155466541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60604816 + ... + 60628293.

It is an arithmetic number, because the mean of its divisors is an integer number (74679595760).

Almost surely, 2^{1423155466551} is an apocalyptic number.

1423155466551 is a deficient number, since it is larger than the sum of its proper divisors (966591597769).

1423155466551 is a wasteful number, since it uses less digits than its factorization.

1423155466551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121233175.

The product of its digits is 2160000, while the sum is 48.

The spelling of 1423155466551 in words is "one trillion, four hundred twenty-three billion, one hundred fifty-five million, four hundred sixty-six thousand, five hundred fifty-one".