1551512421134 has 16 divisors (see below), whose sum is σ = 2506529273472. Its totient is φ = 716014090848.

The previous prime is 1551512421133. The next prime is 1551512421227. The reversal of 1551512421134 is 4311242151551.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1551512421094 and 1551512421103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1551512421131) 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, 2579609 + ... + 3123684.

It is an arithmetic number, because the mean of its divisors is an integer number (156658079592).

Almost surely, 2^{1551512421134} is an apocalyptic number.

1551512421134 is a deficient number, since it is larger than the sum of its proper divisors (955016852338).

1551512421134 is a wasteful number, since it uses less digits than its factorization.

1551512421134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5713771.

The product of its digits is 24000, while the sum is 35.

Adding to 1551512421134 its reverse (4311242151551), we get a palindrome (5862754572685).

The spelling of 1551512421134 in words is "one trillion, five hundred fifty-one billion, five hundred twelve million, four hundred twenty-one thousand, one hundred thirty-four".