21116500061492 has 48 divisors (see below), whose sum is σ = 40431700592640. Its totient is φ = 9570225890400.

The previous prime is 21116500061491. The next prime is 21116500061533. The reversal of 21116500061492 is 29416000561112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21116500061491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 479255759 + ... + 479299817.

It is an arithmetic number, because the mean of its divisors is an integer number (842327095680).

Almost surely, 2^{21116500061492} is an apocalyptic number.

21116500061492 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21116500061492 is a deficient number, since it is larger than the sum of its proper divisors (19315200531148).

21116500061492 is a wasteful number, since it uses less digits than its factorization.

21116500061492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75812 (or 75810 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The spelling of 21116500061492 in words is "twenty-one trillion, one hundred sixteen billion, five hundred million, sixty-one thousand, four hundred ninety-two".