61704743156 has 24 divisors (see below), whose sum is σ = 127664987520. Its totient is φ = 25532996832.

The previous prime is 61704743147. The next prime is 61704743171. The reversal of 61704743156 is 65134740716.

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, 37994720 + ... + 37996343.

It is an arithmetic number, because the mean of its divisors is an integer number (5319374480).

Almost surely, 2^61704743156 is an apocalyptic number.

It is an amenable number.

61704743156 is an abundant number, since it is smaller than the sum of its proper divisors (65960244364).

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

61704743156 is a wasteful number, since it uses less digits than its factorization.

61704743156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75991103 (or 75991101 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 61704743156 in words is "sixty-one billion, seven hundred four million, seven hundred forty-three thousand, one hundred fifty-six".