3451476547781 has 2 divisors, whose sum is σ = 3451476547782. Its totient is φ = 3451476547780.

The previous prime is 3451476547693. The next prime is 3451476547787. The reversal of 3451476547781 is 1877456741543.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2054518022881 + 1396958524900 = 1433359^2 + 1181930^2 .

It is an emirp because it is prime and its reverse (1877456741543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3451476547781 - 2³⁰ = 3450402805957 is a prime.

It is a super-2 number, since 2×3451476547781² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3451476547787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1725738273890 + 1725738273891.

It is an arithmetic number, because the mean of its divisors is an integer number (1725738273891).

Almost surely, 2^{3451476547781} is an apocalyptic number.

It is an amenable number.

3451476547781 is a deficient number, since it is larger than the sum of its proper divisors (1).

3451476547781 is an equidigital number, since it uses as much as digits as its factorization.

3451476547781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79027200, while the sum is 62.

The spelling of 3451476547781 in words is "three trillion, four hundred fifty-one billion, four hundred seventy-six million, five hundred forty-seven thousand, seven hundred eighty-one".