69006001728781 has 8 divisors (see below), whose sum is σ = 74314460971520. Its totient is φ = 63697586095152.

The previous prime is 69006001728757. The next prime is 69006001728793. The reversal of 69006001728781 is 18782710060096.

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 69006001728781 - 2²¹ = 69005999631629 is a prime.

It is a super-2 number, since 2×69006001728781² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69006001722781) 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, 7578261 + ... + 13980058.

It is an arithmetic number, because the mean of its divisors is an integer number (9289307621440).

Almost surely, 2^{69006001728781} is an apocalyptic number.

It is an amenable number.

69006001728781 is a deficient number, since it is larger than the sum of its proper divisors (5308459242739).

69006001728781 is a wasteful number, since it uses less digits than its factorization.

69006001728781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21804555.

The product of its (nonzero) digits is 2032128, while the sum is 55.

The spelling of 69006001728781 in words is "sixty-nine trillion, six billion, one million, seven hundred twenty-eight thousand, seven hundred eighty-one".