68419489557 has 8 divisors (see below), whose sum is σ = 91227495520. Its totient is φ = 45612238320.

The previous prime is 68419489549. The next prime is 68419489583. The reversal of 68419489557 is 75598491486.

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

It is not a de Polignac number, because 68419489557 - 2³ = 68419489549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68419489507) 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, 75819 + ... + 377607.

It is an arithmetic number, because the mean of its divisors is an integer number (11403436940).

Almost surely, 2^68419489557 is an apocalyptic number.

It is an amenable number.

68419489557 is a deficient number, since it is larger than the sum of its proper divisors (22808005963).

68419489557 is a wasteful number, since it uses less digits than its factorization.

68419489557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377363.

The product of its digits is 87091200, while the sum is 66.

The spelling of 68419489557 in words is "sixty-eight billion, four hundred nineteen million, four hundred eighty-nine thousand, five hundred fifty-seven".