53879825647 has 4 divisors (see below), whose sum is σ = 53881346520. Its totient is φ = 53878304776.

The previous prime is 53879825617. The next prime is 53879825669. The reversal of 53879825647 is 74652897835.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74652897835 = 5 ⋅14930579567.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53879825647 is a prime.

It is a super-2 number, since 2×53879825647² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53879825617) 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, 705997 + ... + 778582.

It is an arithmetic number, because the mean of its divisors is an integer number (13470336630).

Almost surely, 2^53879825647 is an apocalyptic number.

53879825647 is a deficient number, since it is larger than the sum of its proper divisors (1520873).

53879825647 is a wasteful number, since it uses less digits than its factorization.

53879825647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520872.

The product of its digits is 101606400, while the sum is 64.

The spelling of 53879825647 in words is "fifty-three billion, eight hundred seventy-nine million, eight hundred twenty-five thousand, six hundred forty-seven".