61919031743 has 8 divisors (see below), whose sum is σ = 62061951600. Its totient is φ = 61776261568.

The previous prime is 61919031739. The next prime is 61919031761. The reversal of 61919031743 is 34713091916.

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

It is a cyclic number.

It is not a de Polignac number, because 61919031743 - 2² = 61919031739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61919031694 and 61919031703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61919031143) 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, 813005 + ... + 885897.

It is an arithmetic number, because the mean of its divisors is an integer number (7757743950).

Almost surely, 2^61919031743 is an apocalyptic number.

61919031743 is a deficient number, since it is larger than the sum of its proper divisors (142919857).

61919031743 is a wasteful number, since it uses less digits than its factorization.

61919031743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74841.

The product of its (nonzero) digits is 122472, while the sum is 44.

The spelling of 61919031743 in words is "sixty-one billion, nine hundred nineteen million, thirty-one thousand, seven hundred forty-three".