69889340468772 has 144 divisors (see below), whose sum is σ = 199920054839232. Its totient is φ = 21172554852480.

The previous prime is 69889340468771. The next prime is 69889340468789. The reversal of 69889340468772 is 27786404398896.

69889340468772 is a `hidden beast` number, since 6 + 9 + 8 + 89 + 3 + 4 + 0 + 468 + 7 + 72 = 666.

It is a super-2 number, since 2×69889340468772² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a junction number, because it is equal to n+sod(n) for n = 69889340468691 and 69889340468700.

It is not an unprimeable number, because it can be changed into a prime (69889340468771) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36674478 + ... + 38533050.

Almost surely, 2^{69889340468772} 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 69889340468772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99960027419616).

69889340468772 is an abundant number, since it is smaller than the sum of its proper divisors (130030714370460).

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

69889340468772 is a wasteful number, since it uses less digits than its factorization.

69889340468772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1862120 (or 1862106 counting only the distinct ones).

The product of its (nonzero) digits is 7023034368, while the sum is 81.

The spelling of 69889340468772 in words is "sixty-nine trillion, eight hundred eighty-nine billion, three hundred forty million, four hundred sixty-eight thousand, seven hundred seventy-two".