55711220007 has 4 divisors (see below), whose sum is σ = 74281626680. Its totient is φ = 37140813336.

The previous prime is 55711219997. The next prime is 55711220039. The reversal of 55711220007 is 70002211755.

55711220007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 55711220007 - 2³⁵ = 21351481639 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 (55711220707) 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, 9285203332 + ... + 9285203337.

It is an arithmetic number, because the mean of its divisors is an integer number (18570406670).

Almost surely, 2^55711220007 is an apocalyptic number.

55711220007 is a deficient number, since it is larger than the sum of its proper divisors (18570406673).

55711220007 is a wasteful number, since it uses less digits than its factorization.

55711220007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18570406672.

The product of its (nonzero) digits is 4900, while the sum is 30.

The spelling of 55711220007 in words is "fifty-five billion, seven hundred eleven million, two hundred twenty thousand, seven".