61636661206 has 8 divisors (see below), whose sum is σ = 92484643680. Its totient is φ = 30808446648.

The previous prime is 61636661197. The next prime is 61636661249. The reversal of 61636661206 is 60216663616.

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

It is a congruent number.

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, 4934181 + ... + 4946656.

It is an arithmetic number, because the mean of its divisors is an integer number (11560580460).

Almost surely, 2^61636661206 is an apocalyptic number.

61636661206 is a deficient number, since it is larger than the sum of its proper divisors (30847982474).

61636661206 is a wasteful number, since it uses less digits than its factorization.

61636661206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9883958.

The product of its (nonzero) digits is 279936, while the sum is 43.

The spelling of 61636661206 in words is "sixty-one billion, six hundred thirty-six million, six hundred sixty-one thousand, two hundred six".