7450131808477 has 2 divisors, whose sum is σ = 7450131808478. Its totient is φ = 7450131808476.

The previous prime is 7450131808459. The next prime is 7450131808543. The reversal of 7450131808477 is 7748081310547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6471498439396 + 978633369081 = 2543914^2 + 989259^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7450131808477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7450131208477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3725065904238 + 3725065904239.

It is an arithmetic number, because the mean of its divisors is an integer number (3725065904239).

Almost surely, 2^{7450131808477} is an apocalyptic number.

It is an amenable number.

7450131808477 is a deficient number, since it is larger than the sum of its proper divisors (1).

7450131808477 is an equidigital number, since it uses as much as digits as its factorization.

7450131808477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5268480, while the sum is 55.

The spelling of 7450131808477 in words is "seven trillion, four hundred fifty billion, one hundred thirty-one million, eight hundred eight thousand, four hundred seventy-seven".