69921684552 has 64 divisors (see below), whose sum is σ = 178689934080. Its totient is φ = 22790057472.

The previous prime is 69921684517. The next prime is 69921684563. The reversal of 69921684552 is 25548612996.

It is a junction number, because it is equal to n+sod(n) for n = 69921684492 and 69921684501.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1204548 + ... + 1261260.

It is an arithmetic number, because the mean of its divisors is an integer number (2792030220).

Almost surely, 2^69921684552 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 69921684552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89344967040).

69921684552 is an abundant number, since it is smaller than the sum of its proper divisors (108768249528).

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

69921684552 is a wasteful number, since it uses less digits than its factorization.

69921684552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57862 (or 57858 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 57.

The spelling of 69921684552 in words is "sixty-nine billion, nine hundred twenty-one million, six hundred eighty-four thousand, five hundred fifty-two".