521740000111 has 8 divisors (see below), whose sum is σ = 572990850000. Its totient is φ = 471125807040.

The previous prime is 521740000087. The next prime is 521740000141. The reversal of 521740000111 is 111000047125.

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

It is a cyclic number.

It is not a de Polignac number, because 521740000111 - 2⁷ = 521739999983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521740000141) 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, 159162486 + ... + 159165763.

It is an arithmetic number, because the mean of its divisors is an integer number (71623856250).

Almost surely, 2^521740000111 is an apocalyptic number.

521740000111 is a deficient number, since it is larger than the sum of its proper divisors (51250849889).

521740000111 is a wasteful number, since it uses less digits than its factorization.

521740000111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318328409.

The product of its (nonzero) digits is 280, while the sum is 22.

Adding to 521740000111 its reverse (111000047125), we get a palindrome (632740047236).

The spelling of 521740000111 in words is "five hundred twenty-one billion, seven hundred forty million, one hundred eleven", and thus it is an aban number.