53529767618 has 4 divisors (see below), whose sum is σ = 80294651430. Its totient is φ = 26764883808.

The previous prime is 53529767617. The next prime is 53529767639. The reversal of 53529767618 is 81676792535.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 42744322009 + 10785445609 = 206747^2 + 103853^2 .

It is not an unprimeable number, because it can be changed into a prime (53529767611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13382441903 + ... + 13382441906.

Almost surely, 2^53529767618 is an apocalyptic number.

53529767618 is a deficient number, since it is larger than the sum of its proper divisors (26764883812).

53529767618 is a wasteful number, since it uses less digits than its factorization.

53529767618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26764883811.

The product of its digits is 19051200, while the sum is 59.

The spelling of 53529767618 in words is "fifty-three billion, five hundred twenty-nine million, seven hundred sixty-seven thousand, six hundred eighteen".