61365123646 has 16 divisors (see below), whose sum is σ = 92285622000. Its totient is φ = 30603299328.

The previous prime is 61365123641. The next prime is 61365123671. The reversal of 61365123646 is 64632156316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61365123641) 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, 2889061 + ... + 2910223.

It is an arithmetic number, because the mean of its divisors is an integer number (5767851375).

Almost surely, 2^61365123646 is an apocalyptic number.

61365123646 is a deficient number, since it is larger than the sum of its proper divisors (30920498354).

61365123646 is a wasteful number, since it uses less digits than its factorization.

61365123646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24843.

The product of its digits is 466560, while the sum is 43.

The spelling of 61365123646 in words is "sixty-one billion, three hundred sixty-five million, one hundred twenty-three thousand, six hundred forty-six".