1551112555040 has 96 divisors (see below), whose sum is σ = 3670002483840. Its totient is φ = 619514828800.

The previous prime is 1551112554961. The next prime is 1551112555049. The reversal of 1551112555040 is 405552111551.

It is not an unprimeable number, because it can be changed into a prime (1551112555049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 515147135 + ... + 515150145.

It is an arithmetic number, because the mean of its divisors is an integer number (38229192540).

Almost surely, 2^{1551112555040} is an apocalyptic number.

1551112555040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1551112555040 is an abundant number, since it is smaller than the sum of its proper divisors (2118889928800).

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

1551112555040 is a wasteful number, since it uses less digits than its factorization.

1551112555040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6786 (or 6778 counting only the distinct ones).

The product of its (nonzero) digits is 25000, while the sum is 35.

Adding to 1551112555040 its reverse (405552111551), we get a palindrome (1956664666591).

The spelling of 1551112555040 in words is "one trillion, five hundred fifty-one billion, one hundred twelve million, five hundred fifty-five thousand, forty".