21963863088 has 30 divisors (see below), whose sum is σ = 61468311684. Its totient is φ = 7321287648.

The previous prime is 21963863071. The next prime is 21963863107. The reversal of 21963863088 is 88036836912.

It is a happy number.

It is a super-2 number, since 2×21963863088² (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 5 ways as a sum of consecutive naturals, for example, 76263270 + ... + 76263557.

Almost surely, 2^21963863088 is an apocalyptic number.

It is an amenable number.

21963863088 is an abundant number, since it is smaller than the sum of its proper divisors (39504448596).

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

21963863088 is a wasteful number, since it uses less digits than its factorization.

21963863088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152526841 (or 152526832 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 21963863088 in words is "twenty-one billion, nine hundred sixty-three million, eight hundred sixty-three thousand, eighty-eight".