21194262711860 has 24 divisors (see below), whose sum is σ = 50866230508800. Its totient is φ = 7266604358304.

The previous prime is 21194262711821. The next prime is 21194262711889. The reversal of 21194262711860 is 6811726249112.

It is a junction number, because it is equal to n+sod(n) for n = 21194262711799 and 21194262711808.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75693795260 + ... + 75693795539.

It is an arithmetic number, because the mean of its divisors is an integer number (2119426271200).

Almost surely, 2^{21194262711860} is an apocalyptic number.

21194262711860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21194262711860 is an abundant number, since it is smaller than the sum of its proper divisors (29671967796940).

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

21194262711860 is a wasteful number, since it uses less digits than its factorization.

21194262711860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151387590815 (or 151387590813 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 50.

The spelling of 21194262711860 in words is "twenty-one trillion, one hundred ninety-four billion, two hundred sixty-two million, seven hundred eleven thousand, eight hundred sixty".