55823881511721 has 16 divisors (see below), whose sum is σ = 74443154207744. Its totient is φ = 37210265391744.

The previous prime is 55823881511669. The next prime is 55823881511771. The reversal of 55823881511721 is 12711518832855.

It is not a de Polignac number, because 55823881511721 - 2¹⁷ = 55823881380649 is a prime.

It is a super-3 number, since 3×55823881511721³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55823881511771) 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, 611810115 + ... + 611901351.

It is an arithmetic number, because the mean of its divisors is an integer number (4652697137984).

Almost surely, 2^{55823881511721} is an apocalyptic number.

It is an amenable number.

55823881511721 is a deficient number, since it is larger than the sum of its proper divisors (18619272696023).

55823881511721 is a wasteful number, since it uses less digits than its factorization.

55823881511721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120000.

The product of its digits is 5376000, while the sum is 57.

The spelling of 55823881511721 in words is "fifty-five trillion, eight hundred twenty-three billion, eight hundred eighty-one million, five hundred eleven thousand, seven hundred twenty-one".