11543420499 has 8 divisors (see below), whose sum is σ = 16575167952. Its totient is φ = 7103643360.

The previous prime is 11543420467. The next prime is 11543420501. The reversal of 11543420499 is 99402434511.

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

It is not a de Polignac number, because 11543420499 - 2⁵ = 11543420467 is a prime.

It is a super-3 number, since 3×11543420499³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11543420499.

It is not an unprimeable number, because it can be changed into a prime (11543420459) 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, 147992532 + ... + 147992609.

It is an arithmetic number, because the mean of its divisors is an integer number (2071895994).

Almost surely, 2^11543420499 is an apocalyptic number.

11543420499 is a deficient number, since it is larger than the sum of its proper divisors (5031747453).

11543420499 is a wasteful number, since it uses less digits than its factorization.

11543420499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295985157.

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 11543420499 in words is "eleven billion, five hundred forty-three million, four hundred twenty thousand, four hundred ninety-nine".