15520601142 has 12 divisors (see below), whose sum is σ = 33627969180. Its totient is φ = 5173533708.

The previous prime is 15520601113. The next prime is 15520601149. The reversal of 15520601142 is 24110602551.

15520601142 is a `hidden beast` number, since 1 + 5 + 52 + 0 + 601 + 1 + 4 + 2 = 666.

15520601142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15520601149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 431127792 + ... + 431127827.

It is an arithmetic number, because the mean of its divisors is an integer number (2802330765).

Almost surely, 2^15520601142 is an apocalyptic number.

15520601142 is an abundant number, since it is smaller than the sum of its proper divisors (18107368038).

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

15520601142 is a wasteful number, since it uses less digits than its factorization.

15520601142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862255627 (or 862255624 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The spelling of 15520601142 in words is "fifteen billion, five hundred twenty million, six hundred one thousand, one hundred forty-two".