6651000705520 has 40 divisors (see below), whose sum is σ = 15464160788400. Its totient is φ = 2660299783680.

The previous prime is 6651000705469. The next prime is 6651000705533. The reversal of 6651000705520 is 255070001566.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×6651000705520³ (a number of 39 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6651000705520.

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, 578980 + ... + 3692860.

It is an arithmetic number, because the mean of its divisors is an integer number (386604019710).

Almost surely, 2^{6651000705520} is an apocalyptic number.

It is an amenable number.

6651000705520 is an abundant number, since it is smaller than the sum of its proper divisors (8813160082880).

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

6651000705520 is a wasteful number, since it uses less digits than its factorization.

6651000705520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3140593 (or 3140587 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 37.

The spelling of 6651000705520 in words is "six trillion, six hundred fifty-one billion, seven hundred five thousand, five hundred twenty".