61768343736 has 48 divisors (see below), whose sum is σ = 182497381560. Its totient is φ = 18717679680.

The previous prime is 61768343717. The next prime is 61768343761. The reversal of 61768343736 is 63734386716.

61768343736 is a `hidden beast` number, since 6 + 176 + 8 + 3 + 437 + 36 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38994375 + ... + 38995958.

Almost surely, 2^61768343736 is an apocalyptic number.

61768343736 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

61768343736 is an abundant number, since it is smaller than the sum of its proper divisors (120729037824).

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

61768343736 is a wasteful number, since it uses less digits than its factorization.

61768343736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77990356 (or 77990349 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 54.

It can be divided in two parts, 61768 and 343736, that added together give a palindrome (405504).

The spelling of 61768343736 in words is "sixty-one billion, seven hundred sixty-eight million, three hundred forty-three thousand, seven hundred thirty-six".