6758734750921 has 4 divisors (see below), whose sum is σ = 6760627427344. Its totient is φ = 6756842074500.

The previous prime is 6758734750907. The next prime is 6758734750949. The reversal of 6758734750921 is 1290574378576.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6758734750921 - 2⁷ = 6758734750793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6758734720921) 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, 946332855 + ... + 946339996.

It is an arithmetic number, because the mean of its divisors is an integer number (1690156856836).

It is a 2-persistent number, because it is pandigital, and so is 2⋅6758734750921 = 13517469501842, but 3⋅6758734750921 = 20276204252763 is not.

Almost surely, 2^{6758734750921} is an apocalyptic number.

It is an amenable number.

6758734750921 is a deficient number, since it is larger than the sum of its proper divisors (1892676423).

6758734750921 is a wasteful number, since it uses less digits than its factorization.

6758734750921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892676422.

The product of its (nonzero) digits is 88905600, while the sum is 64.

The spelling of 6758734750921 in words is "six trillion, seven hundred fifty-eight billion, seven hundred thirty-four million, seven hundred fifty thousand, nine hundred twenty-one".