11917302420 has 24 divisors (see below), whose sum is σ = 33368446944. Its totient is φ = 3177947296.

The previous prime is 11917302407. The next prime is 11917302457. The reversal of 11917302420 is 2420371911.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99310794 + ... + 99310913.

It is an arithmetic number, because the mean of its divisors is an integer number (1390351956).

Almost surely, 2^11917302420 is an apocalyptic number.

11917302420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11917302420 is an abundant number, since it is smaller than the sum of its proper divisors (21451144524).

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

11917302420 is a wasteful number, since it uses less digits than its factorization.

11917302420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198621719 (or 198621717 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The spelling of 11917302420 in words is "eleven billion, nine hundred seventeen million, three hundred two thousand, four hundred twenty".