1515996165420 has 288 divisors, whose sum is σ = 5081227744320. Its totient is φ = 362790912000.

The previous prime is 1515996165401. The next prime is 1515996165433. The reversal of 1515996165420 is 245616995151.

1515996165420 is a `hidden beast` number, since 1 + 5 + 1 + 5 + 9 + 96 + 1 + 6 + 542 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 112950310 + ... + 112963730.

It is an arithmetic number, because the mean of its divisors is an integer number (17643151890).

Almost surely, 2^{1515996165420} is an apocalyptic number.

1515996165420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1515996165420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2540613872160).

1515996165420 is an abundant number, since it is smaller than the sum of its proper divisors (3565231578900).

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

1515996165420 is a wasteful number, since it uses less digits than its factorization.

1515996165420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14177 (or 14172 counting only the distinct ones).

The product of its (nonzero) digits is 2916000, while the sum is 54.

The spelling of 1515996165420 in words is "one trillion, five hundred fifteen billion, nine hundred ninety-six million, one hundred sixty-five thousand, four hundred twenty".