1551551234204 has 24 divisors (see below), whose sum is σ = 2737135564800. Its totient is φ = 769514918256.

The previous prime is 1551551234183. The next prime is 1551551234209. The reversal of 1551551234204 is 4024321551551.

It is a super-2 number, since 2×1551551234204² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1551551234209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2290799 + ... + 2889785.

It is an arithmetic number, because the mean of its divisors is an integer number (114047315200).

Almost surely, 2^{1551551234204} is an apocalyptic number.

It is an amenable number.

1551551234204 is a deficient number, since it is larger than the sum of its proper divisors (1185584330596).

1551551234204 is a wasteful number, since it uses less digits than its factorization.

1551551234204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604217 (or 604215 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 38.

Adding to 1551551234204 its reverse (4024321551551), we get a palindrome (5575872785755).

The spelling of 1551551234204 in words is "one trillion, five hundred fifty-one billion, five hundred fifty-one million, two hundred thirty-four thousand, two hundred four".