61030880641 has 2 divisors, whose sum is σ = 61030880642. Its totient is φ = 61030880640.

The previous prime is 61030880639. The next prime is 61030880663. The reversal of 61030880641 is 14608803016.

61030880641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61016410225 + 14470416 = 247015^2 + 3804^2 .

It is a cyclic number.

It is not a de Polignac number, because 61030880641 - 2¹ = 61030880639 is a prime.

Together with 61030880639, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 61030880641.

It is not a weakly prime, because it can be changed into another prime (61030880041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30515440320 + 30515440321.

It is an arithmetic number, because the mean of its divisors is an integer number (30515440321).

Almost surely, 2^61030880641 is an apocalyptic number.

It is an amenable number.

61030880641 is a deficient number, since it is larger than the sum of its proper divisors (1).

61030880641 is an equidigital number, since it uses as much as digits as its factorization.

61030880641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 37.

The spelling of 61030880641 in words is "sixty-one billion, thirty million, eight hundred eighty thousand, six hundred forty-one".