6906219646728 has 16 divisors (see below), whose sum is σ = 17265549116880. Its totient is φ = 2302073215568.

The previous prime is 6906219646727. The next prime is 6906219646771. The reversal of 6906219646728 is 8276469126096.

It is a super-2 number, since 2×6906219646728² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6906219646727) 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, 143879575950 + ... + 143879575997.

It is an arithmetic number, because the mean of its divisors is an integer number (1079096819805).

Almost surely, 2^{6906219646728} is an apocalyptic number.

It is an amenable number.

6906219646728 is an abundant number, since it is smaller than the sum of its proper divisors (10359329470152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6906219646728 is a wasteful number, since it uses less digits than its factorization.

6906219646728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287759151956 (or 287759151952 counting only the distinct ones).

The product of its (nonzero) digits is 94058496, while the sum is 66.

The spelling of 6906219646728 in words is "six trillion, nine hundred six billion, two hundred nineteen million, six hundred forty-six thousand, seven hundred twenty-eight".