2520641378 has 8 divisors (see below), whose sum is σ = 3873180780. Its totient is φ = 1229581120.

The previous prime is 2520641353. The next prime is 2520641399. The reversal of 2520641378 is 8731460252.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2325843529 + 194797849 = 48227^2 + 13957^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15369683 + ... + 15369846.

Almost surely, 2^2520641378 is an apocalyptic number.

2520641378 is a deficient number, since it is larger than the sum of its proper divisors (1352539402).

2520641378 is a wasteful number, since it uses less digits than its factorization.

2520641378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30739572.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 2520641378 is about 50205.9894634096. The cubic root of 2520641378 is about 1360.9338630005.

The spelling of 2520641378 in words is "two billion, five hundred twenty million, six hundred forty-one thousand, three hundred seventy-eight".