15671842542 has 48 divisors (see below), whose sum is σ = 36614607120. Its totient is φ = 4828291200.

The previous prime is 15671842519. The next prime is 15671842559. The reversal of 15671842542 is 24524817651.

15671842542 is a `hidden beast` number, since 1 + 5 + 67 + 1 + 8 + 42 + 542 = 666.

It is a super-2 number, since 2×15671842542² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 544809 + ... + 572852.

It is an arithmetic number, because the mean of its divisors is an integer number (762804315).

Almost surely, 2^15671842542 is an apocalyptic number.

15671842542 is an abundant number, since it is smaller than the sum of its proper divisors (20942764578).

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

15671842542 is a wasteful number, since it uses less digits than its factorization.

15671842542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117729 (or 1117726 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The spelling of 15671842542 in words is "fifteen billion, six hundred seventy-one million, eight hundred forty-two thousand, five hundred forty-two".