11551542551142 has 32 divisors (see below), whose sum is σ = 25275997793664. Its totient is φ = 3490379630400.

The previous prime is 11551542551077. The next prime is 11551542551147. The reversal of 11551542551142 is 24115524515511.

It is a junction number, because it is equal to n+sod(n) for n = 11551542551094 and 11551542551103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11551542551147) 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 15 ways as a sum of consecutive naturals, for example, 252172159 + ... + 252217962.

It is an arithmetic number, because the mean of its divisors is an integer number (789874931052).

Almost surely, 2^{11551542551142} is an apocalyptic number.

11551542551142 is an abundant number, since it is smaller than the sum of its proper divisors (13724455242522).

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

11551542551142 is a wasteful number, since it uses less digits than its factorization.

11551542551142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504390484.

The product of its digits is 200000, while the sum is 42.

The spelling of 11551542551142 in words is "eleven trillion, five hundred fifty-one billion, five hundred forty-two million, five hundred fifty-one thousand, one hundred forty-two".