61780053459 has 16 divisors (see below), whose sum is σ = 89698809600. Its totient is φ = 37673498016.

The previous prime is 61780053451. The next prime is 61780053473. The reversal of 61780053459 is 95435008716.

61780053459 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61780053459 - 2³ = 61780053451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61780053451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18685599 + ... + 18688904.

It is an arithmetic number, because the mean of its divisors is an integer number (5606175600).

Almost surely, 2^61780053459 is an apocalyptic number.

61780053459 is a deficient number, since it is larger than the sum of its proper divisors (27918756141).

61780053459 is a wasteful number, since it uses less digits than its factorization.

61780053459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37374554.

The product of its (nonzero) digits is 907200, while the sum is 48.

The spelling of 61780053459 in words is "sixty-one billion, seven hundred eighty million, fifty-three thousand, four hundred fifty-nine".