665130521550752 has 48 divisors (see below), whose sum is σ = 1354640338800000. Its totient is φ = 321095054165760.

The previous prime is 665130521550743. The next prime is 665130521550763. The reversal of 665130521550752 is 257055125031566.

It is a super-2 number, since 2×665130521550752² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 665130521550694 and 665130521550703.

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, 122624477 + ... + 127933667.

It is an arithmetic number, because the mean of its divisors is an integer number (28221673725000).

Almost surely, 2^{665130521550752} is an apocalyptic number.

It is an amenable number.

665130521550752 is an abundant number, since it is smaller than the sum of its proper divisors (689509817249248).

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

665130521550752 is a wasteful number, since it uses less digits than its factorization.

665130521550752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5444229 (or 5444221 counting only the distinct ones).

The product of its (nonzero) digits is 9450000, while the sum is 53.

The spelling of 665130521550752 in words is "six hundred sixty-five trillion, one hundred thirty billion, five hundred twenty-one million, five hundred fifty thousand, seven hundred fifty-two".