69401136672 has 216 divisors, whose sum is σ = 233347963212. Its totient is φ = 19503590400.

The previous prime is 69401136671. The next prime is 69401136697. The reversal of 69401136672 is 27663110496.

It can be written as a sum of positive squares in 2 ways, for example, as 44488933776 + 24912202896 = 210924^2 + 157836^2 .

It is not an unprimeable number, because it can be changed into a prime (69401136671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 820522 + ... + 901142.

Almost surely, 2^69401136672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69401136672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116673981606).

69401136672 is an abundant number, since it is smaller than the sum of its proper divisors (163946826540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

69401136672 is a wasteful number, since it uses less digits than its factorization.

69401136672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80712 (or 80694 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 69401136672 in words is "sixty-nine billion, four hundred one million, one hundred thirty-six thousand, six hundred seventy-two".