205702896542 has 64 divisors (see below), whose sum is σ = 366362196480. Its totient is φ = 85390032000.

The previous prime is 205702896493. The next prime is 205702896551. The reversal of 205702896542 is 245698207502.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 69989309 + ... + 69992247.

It is an arithmetic number, because the mean of its divisors is an integer number (5724409320).

Almost surely, 2^205702896542 is an apocalyptic number.

205702896542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

205702896542 is a deficient number, since it is larger than the sum of its proper divisors (160659299938).

205702896542 is a wasteful number, since it uses less digits than its factorization.

205702896542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5489.

The product of its (nonzero) digits is 2419200, while the sum is 50.

The spelling of 205702896542 in words is "two hundred five billion, seven hundred two million, eight hundred ninety-six thousand, five hundred forty-two".