61768238853 has 8 divisors (see below), whose sum is σ = 84272946208. Its totient is φ = 40221178704.

The previous prime is 61768238849. The next prime is 61768238863. The reversal of 61768238853 is 35883286716.

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

It is not a de Polignac number, because 61768238853 - 2² = 61768238849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61768238793 and 61768238802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61768238843) 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, 239411650 + ... + 239411907.

It is an arithmetic number, because the mean of its divisors is an integer number (10534118276).

Almost surely, 2^61768238853 is an apocalyptic number.

It is an amenable number.

61768238853 is a deficient number, since it is larger than the sum of its proper divisors (22504707355).

61768238853 is a wasteful number, since it uses less digits than its factorization.

61768238853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478823603.

The product of its digits is 11612160, while the sum is 57.

The spelling of 61768238853 in words is "sixty-one billion, seven hundred sixty-eight million, two hundred thirty-eight thousand, eight hundred fifty-three".