61761122457080 has 16 divisors (see below), whose sum is σ = 138962525528520. Its totient is φ = 24704448982816.

The previous prime is 61761122457071. The next prime is 61761122457119. The reversal of 61761122457080 is 8075422116716.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 772014030674 + ... + 772014030753.

Almost surely, 2^{61761122457080} is an apocalyptic number.

It is an amenable number.

61761122457080 is an abundant number, since it is smaller than the sum of its proper divisors (77201403071440).

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

61761122457080 is a wasteful number, since it uses less digits than its factorization.

61761122457080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544028061438 (or 1544028061434 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 50.

The spelling of 61761122457080 in words is "sixty-one trillion, seven hundred sixty-one billion, one hundred twenty-two million, four hundred fifty-seven thousand, eighty".