11431403421990 has 32 divisors (see below), whose sum is σ = 27440885435616. Its totient is φ = 3047761221120.

The previous prime is 11431403421959. The next prime is 11431403422081. The reversal of 11431403421990 is 9912430413411.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38162371 + ... + 38460750.

It is an arithmetic number, because the mean of its divisors is an integer number (857527669863).

Almost surely, 2^{11431403421990} is an apocalyptic number.

11431403421990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11431403421990 is an abundant number, since it is smaller than the sum of its proper divisors (16009482013626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11431403421990 is a wasteful number, since it uses less digits than its factorization.

11431403421990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76628104.

The product of its (nonzero) digits is 93312, while the sum is 42.

The spelling of 11431403421990 in words is "eleven trillion, four hundred thirty-one billion, four hundred three million, four hundred twenty-one thousand, nine hundred ninety".