15535045556 has 12 divisors (see below), whose sum is σ = 27338209920. Its totient is φ = 7724128440.

The previous prime is 15535045543. The next prime is 15535045577. The reversal of 15535045556 is 65554053551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10847780 + ... + 10849211.

It is an arithmetic number, because the mean of its divisors is an integer number (2278184160).

Almost surely, 2^15535045556 is an apocalyptic number.

It is an amenable number.

15535045556 is a deficient number, since it is larger than the sum of its proper divisors (11803164364).

15535045556 is a wasteful number, since it uses less digits than its factorization.

15535045556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21697174 (or 21697172 counting only the distinct ones).

The product of its (nonzero) digits is 1125000, while the sum is 44.

The spelling of 15535045556 in words is "fifteen billion, five hundred thirty-five million, forty-five thousand, five hundred fifty-six".