61466993721774 has 12 divisors (see below), whose sum is σ = 133178486397216. Its totient is φ = 20488997907252.

The previous prime is 61466993721733. The next prime is 61466993721779. The reversal of 61466993721774 is 47712739966416.

It is a happy number.

61466993721774 is a `hidden beast` number, since 6 + 1 + 466 + 9 + 93 + 7 + 2 + 1 + 7 + 74 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61466993721779) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1707416492254 + ... + 1707416492289.

It is an arithmetic number, because the mean of its divisors is an integer number (11098207199768).

Almost surely, 2^{61466993721774} is an apocalyptic number.

61466993721774 is an abundant number, since it is smaller than the sum of its proper divisors (71711492675442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61466993721774 is a wasteful number, since it uses less digits than its factorization.

61466993721774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3414832984551 (or 3414832984548 counting only the distinct ones).

The product of its digits is 576108288, while the sum is 72.

The spelling of 61466993721774 in words is "sixty-one trillion, four hundred sixty-six billion, nine hundred ninety-three million, seven hundred twenty-one thousand, seven hundred seventy-four".