261432063165626 has 8 divisors (see below), whose sum is σ = 392201440994784. Its totient is φ = 130698249500700.

The previous prime is 261432063165601. The next prime is 261432063165643. The reversal of 261432063165626 is 626561360234162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8891022680 + ... + 8891052083.

It is an arithmetic number, because the mean of its divisors is an integer number (49025180124348).

Almost surely, 2^{261432063165626} is an apocalyptic number.

261432063165626 is a deficient number, since it is larger than the sum of its proper divisors (130769377829158).

261432063165626 is a wasteful number, since it uses less digits than its factorization.

261432063165626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17782082116.

The product of its (nonzero) digits is 11197440, while the sum is 53.

The spelling of 261432063165626 in words is "two hundred sixty-one trillion, four hundred thirty-two billion, sixty-three million, one hundred sixty-five thousand, six hundred twenty-six".