53101399991 has 4 divisors (see below), whose sum is σ = 53379417984. Its totient is φ = 52823382000.

The previous prime is 53101399979. The next prime is 53101400017. The reversal of 53101399991 is 19999310135.

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 53101399991 - 2³⁰ = 52027658167 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 (53101399951) 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, 139008710 + ... + 139009091.

It is an arithmetic number, because the mean of its divisors is an integer number (13344854496).

Almost surely, 2^53101399991 is an apocalyptic number.

53101399991 is a deficient number, since it is larger than the sum of its proper divisors (278017993).

53101399991 is a wasteful number, since it uses less digits than its factorization.

53101399991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278017992.

The product of its (nonzero) digits is 295245, while the sum is 50.

The spelling of 53101399991 in words is "fifty-three billion, one hundred one million, three hundred ninety-nine thousand, nine hundred ninety-one".