21593777132 has 6 divisors (see below), whose sum is σ = 37789109988. Its totient is φ = 10796888564.

The previous prime is 21593777099. The next prime is 21593777141. The reversal of 21593777132 is 23177739512.

It is a super-2 number, since 2×21593777132² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2699222138 + ... + 2699222145.

It is an arithmetic number, because the mean of its divisors is an integer number (6298184998).

Almost surely, 2^21593777132 is an apocalyptic number.

It is an amenable number.

21593777132 is a deficient number, since it is larger than the sum of its proper divisors (16195332856).

21593777132 is a wasteful number, since it uses less digits than its factorization.

21593777132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5398444287 (or 5398444285 counting only the distinct ones).

The product of its digits is 555660, while the sum is 47.

The spelling of 21593777132 in words is "twenty-one billion, five hundred ninety-three million, seven hundred seventy-seven thousand, one hundred thirty-two".