21383081762 has 16 divisors (see below), whose sum is σ = 36706332480. Its totient is φ = 9151772688.

The previous prime is 21383081749. The next prime is 21383081767. The reversal of 21383081762 is 26718038312.

It is not an unprimeable number, because it can be changed into a prime (21383081767) 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, 1023053 + ... + 1043744.

It is an arithmetic number, because the mean of its divisors is an integer number (2294145780).

Almost surely, 2^21383081762 is an apocalyptic number.

21383081762 is a deficient number, since it is larger than the sum of its proper divisors (15323250718).

21383081762 is a wasteful number, since it uses less digits than its factorization.

21383081762 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2067545.

The product of its (nonzero) digits is 96768, while the sum is 41.

It can be divided in two parts, 213830 and 81762, that added together give a palindrome (295592).

The spelling of 21383081762 in words is "twenty-one billion, three hundred eighty-three million, eighty-one thousand, seven hundred sixty-two".