6905487728973 has 4 divisors (see below), whose sum is σ = 9207316971968. Its totient is φ = 4603658485980.

The previous prime is 6905487728957. The next prime is 6905487728989. The reversal of 6905487728973 is 3798277845096.

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 an interprime number because it is at equal distance from previous prime (6905487728957) and next prime (6905487728989).

It is not a de Polignac number, because 6905487728973 - 2⁴ = 6905487728957 is a prime.

It is a super-2 number, since 2×6905487728973² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6905487728895 and 6905487728904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6905487718973) 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, 1150914621493 + ... + 1150914621498.

It is an arithmetic number, because the mean of its divisors is an integer number (2301829242992).

Almost surely, 2^{6905487728973} is an apocalyptic number.

It is an amenable number.

6905487728973 is a deficient number, since it is larger than the sum of its proper divisors (2301829242995).

6905487728973 is a wasteful number, since it uses less digits than its factorization.

6905487728973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2301829242994.

The product of its (nonzero) digits is 1280240640, while the sum is 75.

The spelling of 6905487728973 in words is "six trillion, nine hundred five billion, four hundred eighty-seven million, seven hundred twenty-eight thousand, nine hundred seventy-three".