55111256210072 has 16 divisors (see below), whose sum is σ = 103952369500560. Its totient is φ = 27390624343264.

The previous prime is 55111256210069. The next prime is 55111256210077. The reversal of 55111256210072 is 27001265211155.

It is a happy number.

It is a super-2 number, since 2×55111256210072² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55111256210077) 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, 20625468803 + ... + 20625471474.

It is an arithmetic number, because the mean of its divisors is an integer number (6497023093785).

Almost surely, 2^{55111256210072} is an apocalyptic number.

It is an amenable number.

55111256210072 is a deficient number, since it is larger than the sum of its proper divisors (48841113290488).

55111256210072 is a wasteful number, since it uses less digits than its factorization.

55111256210072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41250940450 (or 41250940446 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 38.

The spelling of 55111256210072 in words is "fifty-five trillion, one hundred eleven billion, two hundred fifty-six million, two hundred ten thousand, seventy-two".