252694156993 has 8 divisors (see below), whose sum is σ = 253777285256. Its totient is φ = 251611315200.

The previous prime is 252694156973. The next prime is 252694156997. The reversal of 252694156993 is 399651496252.

It can be written as a sum of positive squares in 4 ways, for example, as 181670307984 + 71023849009 = 426228^2 + 266503^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 252694156993 - 2¹³ = 252694148801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252694156997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1800853 + ... + 1936093.

It is an arithmetic number, because the mean of its divisors is an integer number (31722160657).

Almost surely, 2^252694156993 is an apocalyptic number.

It is an amenable number.

252694156993 is a deficient number, since it is larger than the sum of its proper divisors (1083128263).

252694156993 is a wasteful number, since it uses less digits than its factorization.

252694156993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143235.

The product of its digits is 31492800, while the sum is 61.

The spelling of 252694156993 in words is "two hundred fifty-two billion, six hundred ninety-four million, one hundred fifty-six thousand, nine hundred ninety-three".