15488747542 has 16 divisors (see below), whose sum is σ = 23357307600. Its totient is φ = 7703055360.

The previous prime is 15488747513. The next prime is 15488747543. The reversal of 15488747542 is 24574788451.

It is a happy number.

It is a super-2 number, since 2×15488747542² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15488747543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395334 + ... + 432742.

It is an arithmetic number, because the mean of its divisors is an integer number (1459831725).

Almost surely, 2^15488747542 is an apocalyptic number.

15488747542 is a deficient number, since it is larger than the sum of its proper divisors (7868560058).

15488747542 is a wasteful number, since it uses less digits than its factorization.

15488747542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38511.

The product of its digits is 10035200, while the sum is 55.

The spelling of 15488747542 in words is "fifteen billion, four hundred eighty-eight million, seven hundred forty-seven thousand, five hundred forty-two".