53140505947 has 2 divisors, whose sum is σ = 53140505948. Its totient is φ = 53140505946.

The previous prime is 53140505909. The next prime is 53140505969. The reversal of 53140505947 is 74950504135.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53140505947 is a prime.

It is not a weakly prime, because it can be changed into another prime (53140505347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26570252973 + 26570252974.

It is an arithmetic number, because the mean of its divisors is an integer number (26570252974).

Almost surely, 2^53140505947 is an apocalyptic number.

53140505947 is a deficient number, since it is larger than the sum of its proper divisors (1).

53140505947 is an equidigital number, since it uses as much as digits as its factorization.

53140505947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378000, while the sum is 43.

The spelling of 53140505947 in words is "fifty-three billion, one hundred forty million, five hundred five thousand, nine hundred forty-seven".