68969523787 has 8 divisors (see below), whose sum is σ = 74807690832. Its totient is φ = 63329260800.

The previous prime is 68969523769. The next prime is 68969523811. The reversal of 68969523787 is 78732596986.

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 68969523787 - 2⁷ = 68969523659 is a prime.

It is a super-2 number, since 2×68969523787² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68969523487) 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, 49475289 + ... + 49476682.

It is an arithmetic number, because the mean of its divisors is an integer number (9350961354).

Almost surely, 2^68969523787 is an apocalyptic number.

68969523787 is a deficient number, since it is larger than the sum of its proper divisors (5838167045).

68969523787 is a wasteful number, since it uses less digits than its factorization.

68969523787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98952029.

The product of its digits is 274337280, while the sum is 70.

The spelling of 68969523787 in words is "sixty-eight billion, nine hundred sixty-nine million, five hundred twenty-three thousand, seven hundred eighty-seven".