6521235016 has 16 divisors (see below), whose sum is σ = 12276033840. Its totient is φ = 3247626000.

The previous prime is 6521235001. The next prime is 6521235031. The reversal of 6521235016 is 6105321256.

It is an interprime number because it is at equal distance from previous prime (6521235001) and next prime (6521235031).

It is a super-2 number, since 2×6521235016² = 85053012267809040512, which contains 22 as substring.

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, 1621806 + ... + 1625821.

It is an arithmetic number, because the mean of its divisors is an integer number (767252115).

Almost surely, 2^6521235016 is an apocalyptic number.

It is an amenable number.

6521235016 is a deficient number, since it is larger than the sum of its proper divisors (5754798824).

6521235016 is a wasteful number, since it uses less digits than its factorization.

6521235016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3247884 (or 3247880 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 6521235016 is about 80754.1640783929. The cubic root of 6521235016 is about 1868.2856752893.

The spelling of 6521235016 in words is "six billion, five hundred twenty-one million, two hundred thirty-five thousand, sixteen".