21300724974 has 32 divisors (see below), whose sum is σ = 45451777536. Its totient is φ = 6631564160.

The previous prime is 21300724927. The next prime is 21300724997. The reversal of 21300724974 is 47942700312.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 783702 + ... + 810425.

It is an arithmetic number, because the mean of its divisors is an integer number (1420368048).

Almost surely, 2^21300724974 is an apocalyptic number.

21300724974 is an abundant number, since it is smaller than the sum of its proper divisors (24151052562).

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

21300724974 is a wasteful number, since it uses less digits than its factorization.

21300724974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594280.

The product of its (nonzero) digits is 84672, while the sum is 39.

The spelling of 21300724974 in words is "twenty-one billion, three hundred million, seven hundred twenty-four thousand, nine hundred seventy-four".