53771474687 has 4 divisors (see below), whose sum is σ = 61453113936. Its totient is φ = 46089835440.

The previous prime is 53771474681. The next prime is 53771474711. The reversal of 53771474687 is 78647417735.

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

It is a cyclic number.

It is not a de Polignac number, because 53771474687 - 2⁸ = 53771474431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53771474681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3840819614 + ... + 3840819627.

It is an arithmetic number, because the mean of its divisors is an integer number (15363278484).

Almost surely, 2^53771474687 is an apocalyptic number.

53771474687 is a deficient number, since it is larger than the sum of its proper divisors (7681639249).

53771474687 is an equidigital number, since it uses as much as digits as its factorization.

53771474687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7681639248.

The product of its digits is 27659520, while the sum is 59.

The spelling of 53771474687 in words is "fifty-three billion, seven hundred seventy-one million, four hundred seventy-four thousand, six hundred eighty-seven".