61778252612841 has 8 divisors (see below), whose sum is σ = 85952351461440. Its totient is φ = 39394827753072.

The previous prime is 61778252612821. The next prime is 61778252612851. The reversal of 61778252612841 is 14821625287716.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61778252612841 - 2¹⁸ = 61778252350697 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61778252612821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 447668497126 + ... + 447668497263.

It is an arithmetic number, because the mean of its divisors is an integer number (10744043932680).

Almost surely, 2^{61778252612841} is an apocalyptic number.

It is an amenable number.

61778252612841 is a deficient number, since it is larger than the sum of its proper divisors (24174098848599).

61778252612841 is a wasteful number, since it uses less digits than its factorization.

61778252612841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895336994415.

The product of its digits is 18063360, while the sum is 60.

The spelling of 61778252612841 in words is "sixty-one trillion, seven hundred seventy-eight billion, two hundred fifty-two million, six hundred twelve thousand, eight hundred forty-one".