53943964529 has 32 divisors (see below), whose sum is σ = 68700360960. Its totient is φ = 41219684352.

The previous prime is 53943964523. The next prime is 53943964537. The reversal of 53943964529 is 92546934935.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-53943964529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53943964523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 270809 + ... + 425705.

It is an arithmetic number, because the mean of its divisors is an integer number (2146886280).

Almost surely, 2^53943964529 is an apocalyptic number.

It is an amenable number.

53943964529 is a deficient number, since it is larger than the sum of its proper divisors (14756396431).

53943964529 is a wasteful number, since it uses less digits than its factorization.

53943964529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155049.

The product of its digits is 31492800, while the sum is 59.

The spelling of 53943964529 in words is "fifty-three billion, nine hundred forty-three million, nine hundred sixty-four thousand, five hundred twenty-nine".