22646551650 has 48 divisors (see below), whose sum is σ = 56330230944. Its totient is φ = 6021146880.

The previous prime is 22646551643. The next prime is 22646551657. The reversal of 22646551650 is 5615564622.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22646551643) and next prime (22646551657).

It is a super-2 number, since 2×22646551650² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (22646551657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 173452 + ... + 274551.

It is an arithmetic number, because the mean of its divisors is an integer number (1173546478).

Almost surely, 2^22646551650 is an apocalyptic number.

22646551650 is an abundant number, since it is smaller than the sum of its proper divisors (33683679294).

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

22646551650 is a wasteful number, since it uses less digits than its factorization.

22646551650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448355 (or 448350 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 22646551650 in words is "twenty-two billion, six hundred forty-six million, five hundred fifty-one thousand, six hundred fifty".