5777661007521 has 48 divisors (see below), whose sum is σ = 9359340506880. Its totient is φ = 3540606733440.

The previous prime is 5777661007513. The next prime is 5777661007537. The reversal of 5777661007521 is 1257001667775.

5777661007521 is a `hidden beast` number, since 5 + 7 + 7 + 7 + 6 + 6 + 100 + 7 + 521 = 666.

It is not a de Polignac number, because 5777661007521 - 2³ = 5777661007513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5777661007571) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3071260 + ... + 4581261.

It is an arithmetic number, because the mean of its divisors is an integer number (194986260560).

Almost surely, 2^{5777661007521} is an apocalyptic number.

It is an amenable number.

5777661007521 is a deficient number, since it is larger than the sum of its proper divisors (3581679499359).

5777661007521 is a wasteful number, since it uses less digits than its factorization.

5777661007521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7652788 (or 7652776 counting only the distinct ones).

The product of its (nonzero) digits is 4321800, while the sum is 54.

The spelling of 5777661007521 in words is "five trillion, seven hundred seventy-seven billion, six hundred sixty-one million, seven thousand, five hundred twenty-one".