21607761148 has 24 divisors (see below), whose sum is σ = 40818264480. Its totient is φ = 9977795520.

The previous prime is 21607761127. The next prime is 21607761157. The reversal of 21607761148 is 84116770612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4046763 + ... + 4052098.

It is an arithmetic number, because the mean of its divisors is an integer number (1700761020).

Almost surely, 2^21607761148 is an apocalyptic number.

It is an amenable number.

21607761148 is a deficient number, since it is larger than the sum of its proper divisors (19210503332).

21607761148 is a wasteful number, since it uses less digits than its factorization.

21607761148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8098917 (or 8098915 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 43.

The spelling of 21607761148 in words is "twenty-one billion, six hundred seven million, seven hundred sixty-one thousand, one hundred forty-eight".