195680626505 has 32 divisors (see below), whose sum is σ = 289497970944. Its totient is φ = 123648212736.

The previous prime is 195680626499. The next prime is 195680626507. The reversal of 195680626505 is 505626086591.

It is a cyclic number.

It is not a de Polignac number, because 195680626505 - 2⁴ = 195680626489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (195680626507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99242 + ... + 633411.

It is an arithmetic number, because the mean of its divisors is an integer number (9046811592).

Almost surely, 2^195680626505 is an apocalyptic number.

It is an amenable number.

195680626505 is a deficient number, since it is larger than the sum of its proper divisors (93817344439).

195680626505 is a wasteful number, since it uses less digits than its factorization.

195680626505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733265.

The product of its (nonzero) digits is 3888000, while the sum is 53.

The spelling of 195680626505 in words is "one hundred ninety-five billion, six hundred eighty million, six hundred twenty-six thousand, five hundred five".