53344553987 has 4 divisors (see below), whose sum is σ = 53816629800. Its totient is φ = 52872478176.

The previous prime is 53344553971. The next prime is 53344553993. The reversal of 53344553987 is 78935544335.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78935544335 = 5 ⋅15787108867.

It is a cyclic number.

It is not a de Polignac number, because 53344553987 - 2⁴ = 53344553971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53344553947) 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, 236037737 + ... + 236037962.

It is an arithmetic number, because the mean of its divisors is an integer number (13454157450).

Almost surely, 2^53344553987 is an apocalyptic number.

53344553987 is a deficient number, since it is larger than the sum of its proper divisors (472075813).

53344553987 is a wasteful number, since it uses less digits than its factorization.

53344553987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472075812.

The product of its digits is 27216000, while the sum is 56.

The spelling of 53344553987 in words is "fifty-three billion, three hundred forty-four million, five hundred fifty-three thousand, nine hundred eighty-seven".