21741532002 has 64 divisors (see below), whose sum is σ = 52498022400. Its totient is φ = 6644261520.

The previous prime is 21741531979. The next prime is 21741532013. The reversal of 21741532002 is 20023514712.

21741532002 is a `hidden beast` number, since 217 + 415 + 32 + 0 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 309978 + ... + 373589.

It is an arithmetic number, because the mean of its divisors is an integer number (820281600).

Almost surely, 2^21741532002 is an apocalyptic number.

21741532002 is an abundant number, since it is smaller than the sum of its proper divisors (30756490398).

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

21741532002 is a wasteful number, since it uses less digits than its factorization.

21741532002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683628 (or 683622 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The spelling of 21741532002 in words is "twenty-one billion, seven hundred forty-one million, five hundred thirty-two thousand, two".