55393721135 has 16 divisors (see below), whose sum is σ = 68782854240. Its totient is φ = 42775528320.

The previous prime is 55393721113. The next prime is 55393721137. The reversal of 55393721135 is 53112739355.

It is not a de Polignac number, because 55393721135 - 2¹² = 55393717039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55393721137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 520145 + ... + 617525.

It is an arithmetic number, because the mean of its divisors is an integer number (4298928390).

Almost surely, 2^55393721135 is an apocalyptic number.

55393721135 is a deficient number, since it is larger than the sum of its proper divisors (13389133105).

55393721135 is a wasteful number, since it uses less digits than its factorization.

55393721135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101338.

The product of its digits is 425250, while the sum is 44.

The spelling of 55393721135 in words is "fifty-five billion, three hundred ninety-three million, seven hundred twenty-one thousand, one hundred thirty-five".