6781554051347 has 16 divisors (see below), whose sum is σ = 6971271820800. Its totient is φ = 6592177796832.

The previous prime is 6781554051331. The next prime is 6781554051359. The reversal of 6781554051347 is 7431504551876.

It is a cyclic number.

It is not a de Polignac number, because 6781554051347 - 2⁴ = 6781554051331 is a prime.

It is a super-2 number, since 2×6781554051347² (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 = 6781554051292 and 6781554051301.

It is not an unprimeable number, because it can be changed into a prime (6781554051397) 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, 185052608 + ... + 185089250.

It is an arithmetic number, because the mean of its divisors is an integer number (435704488800).

Almost surely, 2^{6781554051347} is an apocalyptic number.

6781554051347 is a deficient number, since it is larger than the sum of its proper divisors (189717769453).

6781554051347 is a wasteful number, since it uses less digits than its factorization.

6781554051347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41162.

The product of its (nonzero) digits is 14112000, while the sum is 56.

The spelling of 6781554051347 in words is "six trillion, seven hundred eighty-one billion, five hundred fifty-four million, fifty-one thousand, three hundred forty-seven".