2497778343 has 16 divisors (see below), whose sum is σ = 3790668000. Its totient is φ = 1624570560.

The previous prime is 2497778317. The next prime is 2497778347. The reversal of 2497778343 is 3438777942.

2497778343 is a `hidden beast` number, since 2 + 497 + 77 + 83 + 4 + 3 = 666.

It is not a de Polignac number, because 2497778343 - 2⁶ = 2497778279 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2497778343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2497778347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1127068 + ... + 1129281.

It is an arithmetic number, because the mean of its divisors is an integer number (236916750).

Almost surely, 2^2497778343 is an apocalyptic number.

2497778343 is a deficient number, since it is larger than the sum of its proper divisors (1292889657).

2497778343 is a wasteful number, since it uses less digits than its factorization.

2497778343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256399 (or 2256393 counting only the distinct ones).

The product of its digits is 7112448, while the sum is 54.

The square root of 2497778343 is about 49977.7784920458. The cubic root of 2497778343 is about 1356.8066554879.

The spelling of 2497778343 in words is "two billion, four hundred ninety-seven million, seven hundred seventy-eight thousand, three hundred forty-three".