6521400316 has 24 divisors (see below), whose sum is σ = 11539841040. Its totient is φ = 3224505600.

The previous prime is 6521400299. The next prime is 6521400341. The reversal of 6521400316 is 6130041256.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104436 + ... + 154756.

It is an arithmetic number, because the mean of its divisors is an integer number (480826710).

Almost surely, 2^6521400316 is an apocalyptic number.

It is an amenable number.

6521400316 is a deficient number, since it is larger than the sum of its proper divisors (5018440724).

6521400316 is a wasteful number, since it uses less digits than its factorization.

6521400316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50685 (or 50683 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 6521400316 is about 80755.1875485408. The cubic root of 6521400316 is about 1868.3014608990.

The spelling of 6521400316 in words is "six billion, five hundred twenty-one million, four hundred thousand, three hundred sixteen".