6863400453 has 72 divisors (see below), whose sum is σ = 11571901056. Its totient is φ = 3606220800.

The previous prime is 6863400443. The next prime is 6863400469. The reversal of 6863400453 is 3540043686.

It is not a de Polignac number, because 6863400453 - 2⁶ = 6863400389 is a prime.

It is a super-3 number, since 3×6863400453³ (a number of 30 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6863400443) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 10707013 + ... + 10707653.

It is an arithmetic number, because the mean of its divisors is an integer number (160720848).

Almost surely, 2^6863400453 is an apocalyptic number.

It is an amenable number.

6863400453 is a deficient number, since it is larger than the sum of its proper divisors (4708500603).

6863400453 is a wasteful number, since it uses less digits than its factorization.

6863400453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115 (or 1095 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 39.

The square root of 6863400453 is about 82845.6423295758. The cubic root of 6863400453 is about 1900.4062338214.

The spelling of 6863400453 in words is "six billion, eight hundred sixty-three million, four hundred thousand, four hundred fifty-three".