69161088672 has 144 divisors (see below), whose sum is σ = 211965842088. Its totient is φ = 21264261120.

The previous prime is 69161088649. The next prime is 69161088767. The reversal of 69161088672 is 27688016196.

It can be written as a sum of positive squares in 4 ways, for example, as 51967585296 + 17193503376 = 227964^2 + 131124^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5538628 + ... + 5551100.

Almost surely, 2^69161088672 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 69161088672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105982921044).

69161088672 is an abundant number, since it is smaller than the sum of its proper divisors (142804753416).

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

69161088672 is a wasteful number, since it uses less digits than its factorization.

69161088672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13983 (or 13972 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 69161088672 in words is "sixty-nine billion, one hundred sixty-one million, eighty-eight thousand, six hundred seventy-two".