15615561006 has 48 divisors (see below), whose sum is σ = 33984830880. Its totient is φ = 5181995520.

The previous prime is 15615560999. The next prime is 15615561029. The reversal of 15615561006 is 60016551651.

15615561006 is nontrivially palindromic in base 14.

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, 4115046 + ... + 4118838.

It is an arithmetic number, because the mean of its divisors is an integer number (708017310).

Almost surely, 2^15615561006 is an apocalyptic number.

15615561006 is an abundant number, since it is smaller than the sum of its proper divisors (18369269874).

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

15615561006 is a wasteful number, since it uses less digits than its factorization.

15615561006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4761 (or 4758 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The spelling of 15615561006 in words is "fifteen billion, six hundred fifteen million, five hundred sixty-one thousand, six".