21750152004 has 72 divisors (see below), whose sum is σ = 62866964160. Its totient is φ = 6211046592.

The previous prime is 21750151993. The next prime is 21750152041. The reversal of 21750152004 is 40025105712.

It is a super-2 number, since 2×21750152004² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 476902 + ... + 520514.

It is an arithmetic number, because the mean of its divisors is an integer number (873152280).

Almost surely, 2^21750152004 is an apocalyptic number.

It is an amenable number.

21750152004 is an abundant number, since it is smaller than the sum of its proper divisors (41116812156).

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

21750152004 is a wasteful number, since it uses less digits than its factorization.

21750152004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45609 (or 45604 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

Adding to 21750152004 its reverse (40025105712), we get a palindrome (61775257716).

The spelling of 21750152004 in words is "twenty-one billion, seven hundred fifty million, one hundred fifty-two thousand, four".