1515100661116 has 48 divisors (see below), whose sum is σ = 3085929362880. Its totient is φ = 637428971520.

The previous prime is 1515100661059. The next prime is 1515100661143. The reversal of 1515100661116 is 6111660015151.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2005 + ... + 1740748.

It is an arithmetic number, because the mean of its divisors is an integer number (64290195060).

Almost surely, 2^{1515100661116} is an apocalyptic number.

It is an amenable number.

1515100661116 is an abundant number, since it is smaller than the sum of its proper divisors (1570828701764).

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

1515100661116 is a wasteful number, since it uses less digits than its factorization.

1515100661116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743334 (or 1743332 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 34.

Adding to 1515100661116 its reverse (6111660015151), we get a palindrome (7626760676267).

The spelling of 1515100661116 in words is "one trillion, five hundred fifteen billion, one hundred million, six hundred sixty-one thousand, one hundred sixteen".