21711557014 has 8 divisors (see below), whose sum is σ = 37219812048. Its totient is φ = 9304953000.

The previous prime is 21711557009. The next prime is 21711557027. The reversal of 21711557014 is 41075511712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 775412737 + ... + 775412764.

It is an arithmetic number, because the mean of its divisors is an integer number (4652476506).

Almost surely, 2^21711557014 is an apocalyptic number.

21711557014 is a deficient number, since it is larger than the sum of its proper divisors (15508255034).

21711557014 is a wasteful number, since it uses less digits than its factorization.

21711557014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550825510.

The product of its (nonzero) digits is 9800, while the sum is 34.

The spelling of 21711557014 in words is "twenty-one billion, seven hundred eleven million, five hundred fifty-seven thousand, fourteen".