69497051328 has 280 divisors, whose sum is σ = 211834463808. Its totient is φ = 22609310976.

The previous prime is 69497051291. The next prime is 69497051329. The reversal of 69497051328 is 82315079496.

69497051328 is a `hidden beast` number, since 69 + 49 + 7 + 0 + 513 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (69497051329) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 54166975 + ... + 54168257.

It is a 1-persistent number, because it is pandigital, but 2⋅69497051328 = 138994102656 is not.

Almost surely, 2^69497051328 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 69497051328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105917231904).

69497051328 is an abundant number, since it is smaller than the sum of its proper divisors (142337412480).

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

69497051328 is an frugal number, since it uses more digits than its factorization.

69497051328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365 (or 1331 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 69497051328 in words is "sixty-nine billion, four hundred ninety-seven million, fifty-one thousand, three hundred twenty-eight".