68501807949 has 8 divisors (see below), whose sum is σ = 91342339200. Its totient is φ = 45664574336.

The previous prime is 68501807939. The next prime is 68501807951. The reversal of 68501807949 is 94970810586.

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 68501807949 - 2⁵ = 68501807917 is a prime.

It is a super-3 number, since 3×68501807949³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68501807939) 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, 775524 + ... + 859325.

It is an arithmetic number, because the mean of its divisors is an integer number (11417792400).

Almost surely, 2^68501807949 is an apocalyptic number.

It is an amenable number.

68501807949 is a deficient number, since it is larger than the sum of its proper divisors (22840531251).

68501807949 is a wasteful number, since it uses less digits than its factorization.

68501807949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1648819.

The product of its (nonzero) digits is 4354560, while the sum is 57.

The spelling of 68501807949 in words is "sixty-eight billion, five hundred one million, eight hundred seven thousand, nine hundred forty-nine".