61677061376 has 72 divisors (see below), whose sum is σ = 140911397760. Its totient is φ = 26393462784.

The previous prime is 61677061357. The next prime is 61677061393. The reversal of 61677061376 is 67316077616.

It is a happy number.

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, 1187765 + ... + 1238603.

Almost surely, 2^61677061376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61677061376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70455698880).

61677061376 is an abundant number, since it is smaller than the sum of its proper divisors (79234336384).

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

61677061376 is an equidigital number, since it uses as much as digits as its factorization.

61677061376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51539 (or 51525 counting only the distinct ones).

The product of its (nonzero) digits is 1333584, while the sum is 50.

The spelling of 61677061376 in words is "sixty-one billion, six hundred seventy-seven million, sixty-one thousand, three hundred seventy-six".