53878256641 has 4 divisors (see below), whose sum is σ = 58776279984. Its totient is φ = 48980233300.

The previous prime is 53878256639. The next prime is 53878256647. The reversal of 53878256641 is 14665287835.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53878256641 - 2¹ = 53878256639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53878256647) 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, 2449011655 + ... + 2449011676.

It is an arithmetic number, because the mean of its divisors is an integer number (14694069996).

Almost surely, 2^53878256641 is an apocalyptic number.

It is an amenable number.

53878256641 is a deficient number, since it is larger than the sum of its proper divisors (4898023343).

53878256641 is a wasteful number, since it uses less digits than its factorization.

53878256641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4898023342.

The product of its digits is 9676800, while the sum is 55.

The spelling of 53878256641 in words is "fifty-three billion, eight hundred seventy-eight million, two hundred fifty-six thousand, six hundred forty-one".