11661119470 has 288 divisors, whose sum is σ = 30340560096. Its totient is φ = 3171571200.

The previous prime is 11661119447. The next prime is 11661119479. The reversal of 11661119470 is 7491116611.

11661119470 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11661119470² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11661119479) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 25295040 + ... + 25295500.

It is an arithmetic number, because the mean of its divisors is an integer number (105349167).

Almost surely, 2^11661119470 is an apocalyptic number.

11661119470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11661119470 is an abundant number, since it is smaller than the sum of its proper divisors (18679440626).

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

11661119470 is a wasteful number, since it uses less digits than its factorization.

11661119470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544 (or 518 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 37.

It can be divided in two parts, 11661 and 119470, that added together give a palindrome (131131).

The spelling of 11661119470 in words is "eleven billion, six hundred sixty-one million, one hundred nineteen thousand, four hundred seventy".