215025141540 has 96 divisors (see below), whose sum is σ = 658493297280. Its totient is φ = 51993241600.

The previous prime is 215025141533. The next prime is 215025141571. The reversal of 215025141540 is 45141520512.

It is a super-3 number, since 3×215025141540³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 215025141498 and 215025141507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 162021 + ... + 675500.

It is an arithmetic number, because the mean of its divisors is an integer number (6859305180).

Almost surely, 2^215025141540 is an apocalyptic number.

215025141540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215025141540 is an abundant number, since it is smaller than the sum of its proper divisors (443468155740).

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

215025141540 is a wasteful number, since it uses less digits than its factorization.

215025141540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837933 (or 837931 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 30.

The spelling of 215025141540 in words is "two hundred fifteen billion, twenty-five million, one hundred forty-one thousand, five hundred forty".