53638803445 has 4 divisors (see below), whose sum is σ = 64366564140. Its totient is φ = 42911042752.

The previous prime is 53638803403. The next prime is 53638803479. The reversal of 53638803445 is 54430883635.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54430883635 = 5 ⋅10886176727.

It can be written as a sum of positive squares in 2 ways, for example, as 37076657809 + 16562145636 = 192553^2 + 128694^2 .

It is a cyclic number.

It is not a de Polignac number, because 53638803445 - 2²⁵ = 53605249013 is a prime.

It is a super-2 number, since 2×53638803445² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5363880340 + ... + 5363880349.

It is an arithmetic number, because the mean of its divisors is an integer number (16091641035).

Almost surely, 2^53638803445 is an apocalyptic number.

It is an amenable number.

53638803445 is a deficient number, since it is larger than the sum of its proper divisors (10727760695).

53638803445 is a wasteful number, since it uses less digits than its factorization.

53638803445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10727760694.

The product of its (nonzero) digits is 4147200, while the sum is 49.

The spelling of 53638803445 in words is "fifty-three billion, six hundred thirty-eight million, eight hundred three thousand, four hundred forty-five".