11401756421 has 8 divisors (see below), whose sum is σ = 12443133600. Its totient is φ = 10361188240.

The previous prime is 11401756411. The next prime is 11401756451. The reversal of 11401756421 is 12465710411.

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 11401756421 - 2¹⁴ = 11401740037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11401756411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172586 + ... + 229323.

It is an arithmetic number, because the mean of its divisors is an integer number (1555391700).

Almost surely, 2^11401756421 is an apocalyptic number.

11401756421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11401756421 is a deficient number, since it is larger than the sum of its proper divisors (1041377179).

11401756421 is a wasteful number, since it uses less digits than its factorization.

11401756421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404499.

The product of its (nonzero) digits is 6720, while the sum is 32.

The spelling of 11401756421 in words is "eleven billion, four hundred one million, seven hundred fifty-six thousand, four hundred twenty-one".