2155414504520 has 32 divisors (see below), whose sum is σ = 4850573139000. Its totient is φ = 862007490048.

The previous prime is 2155414504499. The next prime is 2155414504561. The reversal of 2155414504520 is 254054145512.

It can be written as a sum of positive squares in 4 ways, for example, as 1855103928484 + 300310576036 = 1362022^2 + 548006^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4726559 + ... + 5162478.

Almost surely, 2^{2155414504520} is an apocalyptic number.

2155414504520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2155414504520 is an abundant number, since it is smaller than the sum of its proper divisors (2695158634480).

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

2155414504520 is a wasteful number, since it uses less digits than its factorization.

2155414504520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9894497 (or 9894493 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 38.

The spelling of 2155414504520 in words is "two trillion, one hundred fifty-five billion, four hundred fourteen million, five hundred four thousand, five hundred twenty".