6521077552 has 80 divisors (see below), whose sum is σ = 14862798720. Its totient is φ = 2739571200.

The previous prime is 6521077531. The next prime is 6521077567. The reversal of 6521077552 is 2557701256.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113323 + ... + 160885.

It is an arithmetic number, because the mean of its divisors is an integer number (185784984).

Almost surely, 2^6521077552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6521077552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7431399360).

6521077552 is an abundant number, since it is smaller than the sum of its proper divisors (8341721168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6521077552 is a wasteful number, since it uses less digits than its factorization.

6521077552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47642 (or 47636 counting only the distinct ones).

The product of its (nonzero) digits is 147000, while the sum is 40.

The square root of 6521077552 is about 80753.1891134957. The cubic root of 6521077552 is about 1868.2706377439.

The spelling of 6521077552 in words is "six billion, five hundred twenty-one million, seventy-seven thousand, five hundred fifty-two".