52857473781 has 16 divisors (see below), whose sum is σ = 80666595968. Its totient is φ = 30158568000.

The previous prime is 52857473729. The next prime is 52857473783. The reversal of 52857473781 is 18737475825.

52857473781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 52857473781 - 2⁹ = 52857473269 is a prime.

It is a super-2 number, since 2×52857473781² (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 (52857473783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1890070 + ... + 1917831.

It is an arithmetic number, because the mean of its divisors is an integer number (5041662248).

Almost surely, 2^52857473781 is an apocalyptic number.

It is an amenable number.

52857473781 is a deficient number, since it is larger than the sum of its proper divisors (27809122187).

52857473781 is a wasteful number, since it uses less digits than its factorization.

52857473781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3808572.

The product of its digits is 13171200, while the sum is 57.

The spelling of 52857473781 in words is "fifty-two billion, eight hundred fifty-seven million, four hundred seventy-three thousand, seven hundred eighty-one".