661675793530 has 16 divisors (see below), whose sum is σ = 1191810996000. Its totient is φ = 264493746832.

The previous prime is 661675793509. The next prime is 661675793533. The reversal of 661675793530 is 35397576166.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (661675793533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22055584 + ... + 22085563.

It is an arithmetic number, because the mean of its divisors is an integer number (74488187250).

Almost surely, 2^661675793530 is an apocalyptic number.

661675793530 is a deficient number, since it is larger than the sum of its proper divisors (530135202470).

661675793530 is a wasteful number, since it uses less digits than its factorization.

661675793530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44142653.

The product of its (nonzero) digits is 21432600, while the sum is 58.

The spelling of 661675793530 in words is "six hundred sixty-one billion, six hundred seventy-five million, seven hundred ninety-three thousand, five hundred thirty".