52571385878 has 64 divisors (see below), whose sum is σ = 88307490816. Its totient is φ = 23271504000.

The previous prime is 52571385877. The next prime is 52571385887. The reversal of 52571385878 is 87858317525.

It is a happy number.

It is a super-2 number, since 2×52571385878² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52571385877) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81253751 + ... + 81254397.

It is an arithmetic number, because the mean of its divisors is an integer number (1379804544).

Almost surely, 2^52571385878 is an apocalyptic number.

52571385878 is a deficient number, since it is larger than the sum of its proper divisors (35736104938).

52571385878 is a wasteful number, since it uses less digits than its factorization.

52571385878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229.

The product of its digits is 18816000, while the sum is 59.

The spelling of 52571385878 in words is "fifty-two billion, five hundred seventy-one million, three hundred eighty-five thousand, eight hundred seventy-eight".