51111230641404 has 24 divisors (see below), whose sum is σ = 119260143217488. Its totient is φ = 17036990444160.

The previous prime is 51111230641363. The next prime is 51111230641409. The reversal of 51111230641404 is 40414603211115.

It is a super-2 number, since 2×51111230641404² (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 (51111230641409) 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, 8317827 + ... + 13092314.

It is an arithmetic number, because the mean of its divisors is an integer number (4969172634062).

Almost surely, 2^{51111230641404} is an apocalyptic number.

It is an amenable number.

51111230641404 is an abundant number, since it is smaller than the sum of its proper divisors (68148912576084).

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

51111230641404 is a wasteful number, since it uses less digits than its factorization.

51111230641404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21609085 (or 21609083 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

Adding to 51111230641404 its reverse (40414603211115), we get a palindrome (91525833852519).

The spelling of 51111230641404 in words is "fifty-one trillion, one hundred eleven billion, two hundred thirty million, six hundred forty-one thousand, four hundred four".