69497576640 has 448 divisors, whose sum is σ = 256909824000. Its totient is φ = 17662095360.

The previous prime is 69497576623. The next prime is 69497576647. The reversal of 69497576640 is 4667579496.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (69497576647) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19792485 + ... + 19795995.

Almost surely, 2^69497576640 is an apocalyptic number.

69497576640 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 69497576640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128454912000).

69497576640 is an abundant number, since it is smaller than the sum of its proper divisors (187412247360).

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

69497576640 is a wasteful number, since it uses less digits than its factorization.

69497576640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3645 (or 3629 counting only the distinct ones).

The product of its (nonzero) digits is 68584320, while the sum is 63.

The spelling of 69497576640 in words is "sixty-nine billion, four hundred ninety-seven million, five hundred seventy-six thousand, six hundred forty".