69161781360 has 640 divisors, whose sum is σ = 267754291200. Its totient is φ = 14408368128.

The previous prime is 69161781349. The next prime is 69161781389. The reversal of 69161781360 is 6318716196.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 244387779 + ... + 244388061.

It is an arithmetic number, because the mean of its divisors is an integer number (418366080).

Almost surely, 2^69161781360 is an apocalyptic number.

69161781360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69161781360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133877145600).

69161781360 is an abundant number, since it is smaller than the sum of its proper divisors (198592509840).

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

69161781360 is a wasteful number, since it uses less digits than its factorization.

69161781360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565 (or 559 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 48.

The spelling of 69161781360 in words is "sixty-nine billion, one hundred sixty-one million, seven hundred eighty-one thousand, three hundred sixty".