61616252760 has 32 divisors (see below), whose sum is σ = 184848758640. Its totient is φ = 16431000704.

The previous prime is 61616252741. The next prime is 61616252777. The reversal of 61616252760 is 6725261616.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256734267 + ... + 256734506.

Almost surely, 2^61616252760 is an apocalyptic number.

61616252760 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61616252760 is an abundant number, since it is smaller than the sum of its proper divisors (123232505880).

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

61616252760 is a wasteful number, since it uses less digits than its factorization.

61616252760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513468787 (or 513468783 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 61616252760 in words is "sixty-one billion, six hundred sixteen million, two hundred fifty-two thousand, seven hundred sixty".