6894651012421 has 16 divisors (see below), whose sum is σ = 7415436204288. Its totient is φ = 6387244761600.

The previous prime is 6894651012323. The next prime is 6894651012437. The reversal of 6894651012421 is 1242101564986.

It is a cyclic number.

It is not a de Polignac number, because 6894651012421 - 2¹⁹ = 6894650488133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6894651012481) 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, 8633040 + ... + 9397801.

It is an arithmetic number, because the mean of its divisors is an integer number (463464762768).

Almost surely, 2^{6894651012421} is an apocalyptic number.

It is an amenable number.

6894651012421 is a deficient number, since it is larger than the sum of its proper divisors (520785191867).

6894651012421 is a wasteful number, since it uses less digits than its factorization.

6894651012421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18031212.

The product of its (nonzero) digits is 829440, while the sum is 49.

The spelling of 6894651012421 in words is "six trillion, eight hundred ninety-four billion, six hundred fifty-one million, twelve thousand, four hundred twenty-one".