22697281540 has 24 divisors (see below), whose sum is σ = 47741319360. Its totient is φ = 9064240608.

The previous prime is 22697281513. The next prime is 22697281543. The reversal of 22697281540 is 4518279622.

It is not an unprimeable number, because it can be changed into a prime (22697281543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 904312 + ... + 929071.

It is an arithmetic number, because the mean of its divisors is an integer number (1989221640).

Almost surely, 2^22697281540 is an apocalyptic number.

22697281540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22697281540 is an abundant number, since it is smaller than the sum of its proper divisors (25044037820).

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

22697281540 is a wasteful number, since it uses less digits than its factorization.

22697281540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1834011 (or 1834009 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 22697281540 in words is "twenty-two billion, six hundred ninety-seven million, two hundred eighty-one thousand, five hundred forty".