15215065261485 has 32 divisors (see below), whose sum is σ = 24639656993280. Its totient is φ = 8016201807168.

The previous prime is 15215065261439. The next prime is 15215065261499. The reversal of 15215065261485 is 58416256051251.

It is a happy number.

It is not a de Polignac number, because 15215065261485 - 2¹⁷ = 15215065130413 is a prime.

It is a super-2 number, since 2×15215065261485² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 13215922 + ... + 14320988.

It is an arithmetic number, because the mean of its divisors is an integer number (769989281040).

Almost surely, 2^{15215065261485} is an apocalyptic number.

15215065261485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15215065261485 is a deficient number, since it is larger than the sum of its proper divisors (9424591731795).

15215065261485 is a wasteful number, since it uses less digits than its factorization.

15215065261485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116217.

The product of its (nonzero) digits is 2880000, while the sum is 51.

The spelling of 15215065261485 in words is "fifteen trillion, two hundred fifteen billion, sixty-five million, two hundred sixty-one thousand, four hundred eighty-five".