252547977729 has 16 divisors (see below), whose sum is σ = 347614225920. Its totient is φ = 162924190080.

The previous prime is 252547977719. The next prime is 252547977739. The reversal of 252547977729 is 927779745252.

It is an interprime number because it is at equal distance from previous prime (252547977719) and next prime (252547977739).

It is not a de Polignac number, because 252547977729 - 2⁵ = 252547977697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 252547977729.

It is not an unprimeable number, because it can be changed into a prime (252547977719) 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, 1630519 + ... + 1778675.

It is an arithmetic number, because the mean of its divisors is an integer number (21725889120).

Almost surely, 2^252547977729 is an apocalyptic number.

It is an amenable number.

252547977729 is a deficient number, since it is larger than the sum of its proper divisors (95066248191).

252547977729 is a wasteful number, since it uses less digits than its factorization.

252547977729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166520.

The product of its digits is 155584800, while the sum is 66.

The spelling of 252547977729 in words is "two hundred fifty-two billion, five hundred forty-seven million, nine hundred seventy-seven thousand, seven hundred twenty-nine".