11401913820 has 96 divisors (see below), whose sum is σ = 35398734336. Its totient is φ = 2718777600.

The previous prime is 11401913771. The next prime is 11401913827. The reversal of 11401913820 is 2831910411.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11401913827) 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, 101344 + ... + 181863.

It is an arithmetic number, because the mean of its divisors is an integer number (368736816).

Almost surely, 2^11401913820 is an apocalyptic number.

11401913820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11401913820 is an abundant number, since it is smaller than the sum of its proper divisors (23996820516).

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

11401913820 is a wasteful number, since it uses less digits than its factorization.

11401913820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283291 (or 283289 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The spelling of 11401913820 in words is "eleven billion, four hundred one million, nine hundred thirteen thousand, eight hundred twenty".