53205143786 has 4 divisors (see below), whose sum is σ = 79807715682. Its totient is φ = 26602571892.

The previous prime is 53205143777. The next prime is 53205143837. The reversal of 53205143786 is 68734150235.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68734150235 = 5 ⋅13746830047.

It can be written as a sum of positive squares in only one way, i.e., 43647148561 + 9557995225 = 208919^2 + 97765^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13301285945 + ... + 13301285948.

Almost surely, 2^53205143786 is an apocalyptic number.

53205143786 is a deficient number, since it is larger than the sum of its proper divisors (26602571896).

53205143786 is a wasteful number, since it uses less digits than its factorization.

53205143786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26602571895.

The product of its (nonzero) digits is 604800, while the sum is 44.

The spelling of 53205143786 in words is "fifty-three billion, two hundred five million, one hundred forty-three thousand, seven hundred eighty-six".