69897785540 has 24 divisors (see below), whose sum is σ = 160129472832. Its totient is φ = 25417376480.

The previous prime is 69897785539. The next prime is 69897785593. The reversal of 69897785540 is 4558779896.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158858384 + ... + 158858823.

It is an arithmetic number, because the mean of its divisors is an integer number (6672061368).

Almost surely, 2^69897785540 is an apocalyptic number.

It is an amenable number.

69897785540 is an abundant number, since it is smaller than the sum of its proper divisors (90231687292).

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

69897785540 is a wasteful number, since it uses less digits than its factorization.

69897785540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317717227 (or 317717225 counting only the distinct ones).

The product of its (nonzero) digits is 152409600, while the sum is 68.

The spelling of 69897785540 in words is "sixty-nine billion, eight hundred ninety-seven million, seven hundred eighty-five thousand, five hundred forty".