948144509261 has 2 divisors, whose sum is σ = 948144509262. Its totient is φ = 948144509260.

The previous prime is 948144509251. The next prime is 948144509269. The reversal of 948144509261 is 162905441849.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 898455641161 + 49688868100 = 947869^2 + 222910^2 .

It is a cyclic number.

It is not a de Polignac number, because 948144509261 - 2⁶ = 948144509197 is a prime.

It is a super-2 number, since 2×948144509261² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (948144509269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 474072254630 + 474072254631.

It is an arithmetic number, because the mean of its divisors is an integer number (474072254631).

Almost surely, 2^948144509261 is an apocalyptic number.

It is an amenable number.

948144509261 is a deficient number, since it is larger than the sum of its proper divisors (1).

948144509261 is an equidigital number, since it uses as much as digits as its factorization.

948144509261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2488320, while the sum is 53.

The spelling of 948144509261 in words is "nine hundred forty-eight billion, one hundred forty-four million, five hundred nine thousand, two hundred sixty-one".