21174671140 has 24 divisors (see below), whose sum is σ = 50819211072. Its totient is φ = 7259887200.

The previous prime is 21174671137. The next prime is 21174671143. The reversal of 21174671140 is 4117647112.

It is an interprime number because it is at equal distance from previous prime (21174671137) and next prime (21174671143).

It is a junction number, because it is equal to n+sod(n) for n = 21174671096 and 21174671105.

It is not an unprimeable number, because it can be changed into a prime (21174671143) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 75623686 + ... + 75623965.

It is an arithmetic number, because the mean of its divisors is an integer number (2117467128).

Almost surely, 2^21174671140 is an apocalyptic number.

21174671140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21174671140 is an abundant number, since it is smaller than the sum of its proper divisors (29644539932).

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

21174671140 is a wasteful number, since it uses less digits than its factorization.

21174671140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151247667 (or 151247665 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 34.

The spelling of 21174671140 in words is "twenty-one billion, one hundred seventy-four million, six hundred seventy-one thousand, one hundred forty".