11894729580 has 96 divisors (see below), whose sum is σ = 37704139200. Its totient is φ = 3112072704.

The previous prime is 11894729569. The next prime is 11894729593. The reversal of 11894729580 is 8592749811.

It is a happy number.

11894729580 is a `hidden beast` number, since 1 + 1 + 8 + 9 + 472 + 95 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 179185 + ... + 236424.

It is an arithmetic number, because the mean of its divisors is an integer number (392751450).

Almost surely, 2^11894729580 is an apocalyptic number.

11894729580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11894729580 is an abundant number, since it is smaller than the sum of its proper divisors (25809409620).

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

11894729580 is a wasteful number, since it uses less digits than its factorization.

11894729580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415680 (or 415672 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 54.

The spelling of 11894729580 in words is "eleven billion, eight hundred ninety-four million, seven hundred twenty-nine thousand, five hundred eighty".