51554101545212 has 24 divisors (see below), whose sum is σ = 103216396431456. Its totient is φ = 22071430660608.

The previous prime is 51554101545211. The next prime is 51554101545269. The reversal of 51554101545212 is 21254510145515.

It is a super-2 number, since 2×51554101545212² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51554101545212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51554101545211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 965984813 + ... + 966038180.

It is an arithmetic number, because the mean of its divisors is an integer number (4300683184644).

Almost surely, 2^{51554101545212} is an apocalyptic number.

It is an amenable number.

51554101545212 is an abundant number, since it is smaller than the sum of its proper divisors (51662294886244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51554101545212 is a wasteful number, since it uses less digits than its factorization.

51554101545212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1932023957 (or 1932023955 counting only the distinct ones).

The product of its (nonzero) digits is 200000, while the sum is 41.

The spelling of 51554101545212 in words is "fifty-one trillion, five hundred fifty-four billion, one hundred one million, five hundred forty-five thousand, two hundred twelve".