52097209136640 has 800 divisors, whose sum is σ = 203945678855424. Its totient is φ = 12653565050880.

The previous prime is 52097209136633. The next prime is 52097209136711. The reversal of 52097209136640 is 4663190279025.

52097209136640 is a `hidden beast` number, since 5 + 209 + 72 + 0 + 9 + 1 + 366 + 4 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 109040352 + ... + 109517088.

Almost surely, 2^{52097209136640} 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 52097209136640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101972839427712).

52097209136640 is an abundant number, since it is smaller than the sum of its proper divisors (151848469718784).

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

52097209136640 is a wasteful number, since it uses less digits than its factorization.

52097209136640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476820 (or 476795 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 54.

The spelling of 52097209136640 in words is "fifty-two trillion, ninety-seven billion, two hundred nine million, one hundred thirty-six thousand, six hundred forty".