21041491835952 has 60 divisors (see below), whose sum is σ = 67299374684880. Its totient is φ = 6011854809984.

The previous prime is 21041491835849. The next prime is 21041491835981. The reversal of 21041491835952 is 25953819414012.

21041491835952 is a `hidden beast` number, since 2 + 1 + 0 + 4 + 1 + 49 + 1 + 8 + 3 + 595 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10437246927 + ... + 10437248942.

It is an arithmetic number, because the mean of its divisors is an integer number (1121656244748).

Almost surely, 2^{21041491835952} is an apocalyptic number.

It is an amenable number.

21041491835952 is an abundant number, since it is smaller than the sum of its proper divisors (46257882848928).

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

21041491835952 is a wasteful number, since it uses less digits than its factorization.

21041491835952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20874495890 (or 20874495881 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 54.

The spelling of 21041491835952 in words is "twenty-one trillion, forty-one billion, four hundred ninety-one million, eight hundred thirty-five thousand, nine hundred fifty-two".