15552123321140 has 72 divisors (see below), whose sum is σ = 38004190301952. Its totient is φ = 5330391689280.

The previous prime is 15552123321139. The next prime is 15552123321143. The reversal of 15552123321140 is 4112332125551.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 15552123321140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15552123321143) 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 23 ways as a sum of consecutive naturals, for example, 337745 + ... + 5587335.

It is an arithmetic number, because the mean of its divisors is an integer number (527835976416).

Almost surely, 2^{15552123321140} is an apocalyptic number.

15552123321140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15552123321140 is an abundant number, since it is smaller than the sum of its proper divisors (22452066980812).

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

15552123321140 is a wasteful number, since it uses less digits than its factorization.

15552123321140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5252637 (or 5252628 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

Adding to 15552123321140 its reverse (4112332125551), we get a palindrome (19664455446691).

The spelling of 15552123321140 in words is "fifteen trillion, five hundred fifty-two billion, one hundred twenty-three million, three hundred twenty-one thousand, one hundred forty".