2520678263 has 4 divisors (see below), whose sum is σ = 2653345560. Its totient is φ = 2388010968.

The previous prime is 2520678253. The next prime is 2520678313. The reversal of 2520678263 is 3628760252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2520678263 - 2¹⁶ = 2520612727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2520678263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520678253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66333620 + ... + 66333657.

It is an arithmetic number, because the mean of its divisors is an integer number (663336390).

Almost surely, 2^2520678263 is an apocalyptic number.

2520678263 is a deficient number, since it is larger than the sum of its proper divisors (132667297).

2520678263 is a wasteful number, since it uses less digits than its factorization.

2520678263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132667296.

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 2520678263 is about 50206.3567987162. The cubic root of 2520678263 is about 1360.9405012317.

The spelling of 2520678263 in words is "two billion, five hundred twenty million, six hundred seventy-eight thousand, two hundred sixty-three".