2600400463 has 4 divisors (see below), whose sum is σ = 2619108520. Its totient is φ = 2581692408.

The previous prime is 2600400437. The next prime is 2600400479. The reversal of 2600400463 is 3640040062.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2600400463 is a prime.

It is a super-2 number, since 2×2600400463² = 13524165135941228738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2600400403) 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, 9353820 + ... + 9354097.

It is an arithmetic number, because the mean of its divisors is an integer number (654777130).

Almost surely, 2^2600400463 is an apocalyptic number.

2600400463 is a deficient number, since it is larger than the sum of its proper divisors (18708057).

2600400463 is a wasteful number, since it uses less digits than its factorization.

2600400463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18708056.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 2600400463 is about 50994.1218475228. The cubic root of 2600400463 is about 1375.1394614247.

The spelling of 2600400463 in words is "two billion, six hundred million, four hundred thousand, four hundred sixty-three".