61409760000 has 360 divisors, whose sum is σ = 210873298944. Its totient is φ = 15843840000.

The previous prime is 61409759993. The next prime is 61409760011. The reversal of 61409760000 is 6790416.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 14877937 + ... + 14882063.

Almost surely, 2^61409760000 is an apocalyptic number.

61409760000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61409760000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105436649472).

61409760000 is an abundant number, since it is smaller than the sum of its proper divisors (149463538944).

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

61409760000 is an equidigital number, since it uses as much as digits as its factorization.

61409760000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4197 (or 4168 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The spelling of 61409760000 in words is "sixty-one billion, four hundred nine million, seven hundred sixty thousand".