21777111034 has 16 divisors (see below), whose sum is σ = 37334520000. Its totient is φ = 9332465184.

The previous prime is 21777110951. The next prime is 21777111071. The reversal of 21777111034 is 43011177712.

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, 245077 + ... + 321895.

It is an arithmetic number, because the mean of its divisors is an integer number (2333407500).

Almost surely, 2^21777111034 is an apocalyptic number.

21777111034 is a deficient number, since it is larger than the sum of its proper divisors (15557408966).

21777111034 is a wasteful number, since it uses less digits than its factorization.

21777111034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97077.

The product of its (nonzero) digits is 8232, while the sum is 34.

Adding to 21777111034 its reverse (43011177712), we get a palindrome (64788288746).

The spelling of 21777111034 in words is "twenty-one billion, seven hundred seventy-seven million, one hundred eleven thousand, thirty-four".