1515166616040 has 128 divisors (see below), whose sum is σ = 5667116728320. Its totient is φ = 314839814400.

The previous prime is 1515166616023. The next prime is 1515166616081. The reversal of 1515166616040 is 406166615151.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 1515166615983 and 1515166616001.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81980296 + ... + 81998775.

It is an arithmetic number, because the mean of its divisors is an integer number (44274349440).

Almost surely, 2^{1515166616040} is an apocalyptic number.

1515166616040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1515166616040 is an abundant number, since it is smaller than the sum of its proper divisors (4151950112280).

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

1515166616040 is a wasteful number, since it uses less digits than its factorization.

1515166616040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163979103 (or 163979099 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 42.

The spelling of 1515166616040 in words is "one trillion, five hundred fifteen billion, one hundred sixty-six million, six hundred sixteen thousand, forty".