52191838507 has 8 divisors (see below), whose sum is σ = 52990993152. Its totient is φ = 51394463400.

The previous prime is 52191838481. The next prime is 52191838553. The reversal of 52191838507 is 70583819125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52191838507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52191838807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385719 + ... + 503152.

It is an arithmetic number, because the mean of its divisors is an integer number (6623874144).

Almost surely, 2^52191838507 is an apocalyptic number.

52191838507 is a deficient number, since it is larger than the sum of its proper divisors (799154645).

52191838507 is an equidigital number, since it uses as much as digits as its factorization.

52191838507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889769.

The product of its (nonzero) digits is 604800, while the sum is 49.

The spelling of 52191838507 in words is "fifty-two billion, one hundred ninety-one million, eight hundred thirty-eight thousand, five hundred seven".