21303572046 has 32 divisors (see below), whose sum is σ = 45584880000. Its totient is φ = 6617155680.

The previous prime is 21303572023. The next prime is 21303572053. The reversal of 21303572046 is 64027530312.

It is a super-2 number, since 2×21303572046² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21303571998 and 21303572016.

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, 1524796 + ... + 1538703.

It is an arithmetic number, because the mean of its divisors is an integer number (1424527500).

Almost surely, 2^21303572046 is an apocalyptic number.

21303572046 is an abundant number, since it is smaller than the sum of its proper divisors (24281307954).

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

21303572046 is a wasteful number, since it uses less digits than its factorization.

21303572046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3063584.

The product of its (nonzero) digits is 30240, while the sum is 33.

The spelling of 21303572046 in words is "twenty-one billion, three hundred three million, five hundred seventy-two thousand, forty-six".