61566661356214 has 16 divisors (see below), whose sum is σ = 105544120210848. Its totient is φ = 26385393966912.

The previous prime is 61566661356203. The next prime is 61566661356253. The reversal of 61566661356214 is 41265316666516.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25298727 + ... + 27625330.

It is an arithmetic number, because the mean of its divisors is an integer number (6596507513178).

Almost surely, 2^{61566661356214} is an apocalyptic number.

61566661356214 is a deficient number, since it is larger than the sum of its proper divisors (43977458854634).

61566661356214 is a wasteful number, since it uses less digits than its factorization.

61566661356214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53007159.

The product of its digits is 27993600, while the sum is 58.

The spelling of 61566661356214 in words is "sixty-one trillion, five hundred sixty-six billion, six hundred sixty-one million, three hundred fifty-six thousand, two hundred fourteen".