21514167734 has 4 divisors (see below), whose sum is σ = 32271251604. Its totient is φ = 10757083866.

The previous prime is 21514167713. The next prime is 21514167739. The reversal of 21514167734 is 43776141512.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 21514167691 and 21514167700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21514167739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5378541932 + ... + 5378541935.

It is an arithmetic number, because the mean of its divisors is an integer number (8067812901).

Almost surely, 2^21514167734 is an apocalyptic number.

21514167734 is a deficient number, since it is larger than the sum of its proper divisors (10757083870).

21514167734 is a wasteful number, since it uses less digits than its factorization.

21514167734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10757083869.

The product of its digits is 141120, while the sum is 41.

The spelling of 21514167734 in words is "twenty-one billion, five hundred fourteen million, one hundred sixty-seven thousand, seven hundred thirty-four".