7345476781 has 2 divisors, whose sum is σ = 7345476782. Its totient is φ = 7345476780.

The previous prime is 7345476769. The next prime is 7345476791. The reversal of 7345476781 is 1876745437.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7335922500 + 9554281 = 85650^2 + 3091^2 .

It is a cyclic number.

It is not a de Polignac number, because 7345476781 - 2⁹ = 7345476269 is a prime.

It is a super-2 number, since 2×7345476781² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7345476751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3672738390 + 3672738391.

It is an arithmetic number, because the mean of its divisors is an integer number (3672738391).

Almost surely, 2^7345476781 is an apocalyptic number.

It is an amenable number.

7345476781 is a deficient number, since it is larger than the sum of its proper divisors (1).

7345476781 is an equidigital number, since it uses as much as digits as its factorization.

7345476781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3951360, while the sum is 52.

The square root of 7345476781 is about 85705.7569886644. The cubic root of 7345476781 is about 1943.8973606279.

The spelling of 7345476781 in words is "seven billion, three hundred forty-five million, four hundred seventy-six thousand, seven hundred eighty-one".