53643406437 has 48 divisors (see below), whose sum is σ = 84052200960. Its totient is φ = 34124259312.

The previous prime is 53643406417. The next prime is 53643406441. The reversal of 53643406437 is 73460434635.

53643406437 is a `hidden beast` number, since 536 + 43 + 40 + 6 + 4 + 37 = 666.

It is not a de Polignac number, because 53643406437 - 2⁶ = 53643406373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53643406392 and 53643406401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53643406417) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2330338 + ... + 2353244.

It is an arithmetic number, because the mean of its divisors is an integer number (1751087520).

Almost surely, 2^53643406437 is an apocalyptic number.

It is an amenable number.

53643406437 is a deficient number, since it is larger than the sum of its proper divisors (30408794523).

53643406437 is a wasteful number, since it uses less digits than its factorization.

53643406437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23364 (or 23352 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 45.

The spelling of 53643406437 in words is "fifty-three billion, six hundred forty-three million, four hundred six thousand, four hundred thirty-seven".