21772152750 has 64 divisors (see below), whose sum is σ = 54387440640. Its totient is φ = 5801191200.

The previous prime is 21772152749. The next prime is 21772152767. The reversal of 21772152750 is 5725127712.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21772152699 and 21772152708.

It is a congruent number.

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, 966111 + ... + 988389.

It is an arithmetic number, because the mean of its divisors is an integer number (849803760).

Almost surely, 2^21772152750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21772152750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27193720320).

21772152750 is an abundant number, since it is smaller than the sum of its proper divisors (32615287890).

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

21772152750 is a wasteful number, since it uses less digits than its factorization.

21772152750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23602 (or 23592 counting only the distinct ones).

The product of its (nonzero) digits is 68600, while the sum is 39.

The spelling of 21772152750 in words is "twenty-one billion, seven hundred seventy-two million, one hundred fifty-two thousand, seven hundred fifty".