22615523651 has 48 divisors (see below), whose sum is σ = 28547205120. Its totient is φ = 17810876160.

The previous prime is 22615523641. The next prime is 22615523659. The reversal of 22615523651 is 15632551622.

It is not a de Polignac number, because 22615523651 - 2¹⁰ = 22615522627 is a prime.

It is a super-2 number, since 2×22615523651² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22615523659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4853915 + ... + 4858571.

It is an arithmetic number, because the mean of its divisors is an integer number (594733440).

Almost surely, 2^22615523651 is an apocalyptic number.

22615523651 is a deficient number, since it is larger than the sum of its proper divisors (5931681469).

22615523651 is a wasteful number, since it uses less digits than its factorization.

22615523651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4864 (or 4857 counting only the distinct ones).

The product of its digits is 108000, while the sum is 38.

The spelling of 22615523651 in words is "twenty-two billion, six hundred fifteen million, five hundred twenty-three thousand, six hundred fifty-one".