1015165661500 has 48 divisors (see below), whose sum is σ = 2217253540320. Its totient is φ = 406042137600.

The previous prime is 1015165661443. The next prime is 1015165661507. The reversal of 1015165661500 is 51665615101.

It is a super-2 number, since 2×1015165661500² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1015165661500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1015165661507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10059292 + ... + 10159708.

It is an arithmetic number, because the mean of its divisors is an integer number (46192782090).

Almost surely, 2^{1015165661500} is an apocalyptic number.

1015165661500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1015165661500 is an abundant number, since it is smaller than the sum of its proper divisors (1202087878820).

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

1015165661500 is a wasteful number, since it uses less digits than its factorization.

1015165661500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120655 (or 120643 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 1015165661500 in words is "one trillion, fifteen billion, one hundred sixty-five million, six hundred sixty-one thousand, five hundred".