11617763421 has 16 divisors (see below), whose sum is σ = 16938915840. Its totient is φ = 7024255920.

The previous prime is 11617763411. The next prime is 11617763447. The reversal of 11617763421 is 12436771611.

It is a happy number.

It is not a de Polignac number, because 11617763421 - 2¹⁹ = 11617239133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11617763421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11617763411) 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, 406285 + ... + 433938.

It is an arithmetic number, because the mean of its divisors is an integer number (1058682240).

Almost surely, 2^11617763421 is an apocalyptic number.

11617763421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11617763421 is a deficient number, since it is larger than the sum of its proper divisors (5321152419).

11617763421 is a wasteful number, since it uses less digits than its factorization.

11617763421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840656.

The product of its digits is 42336, while the sum is 39.

The spelling of 11617763421 in words is "eleven billion, six hundred seventeen million, seven hundred sixty-three thousand, four hundred twenty-one".