1011953268461 has 2 divisors, whose sum is σ = 1011953268462. Its totient is φ = 1011953268460.

The previous prime is 1011953268421. The next prime is 1011953268481. The reversal of 1011953268461 is 1648623591101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1011945462025 + 7806436 = 1005955^2 + 2794^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011953268461 - 2¹⁴ = 1011953252077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011953268401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505976634230 + 505976634231.

It is an arithmetic number, because the mean of its divisors is an integer number (505976634231).

Almost surely, 2^{1011953268461} is an apocalyptic number.

It is an amenable number.

1011953268461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011953268461 is an equidigital number, since it uses as much as digits as its factorization.

1011953268461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 1011953268461 in words is "one trillion, eleven billion, nine hundred fifty-three million, two hundred sixty-eight thousand, four hundred sixty-one".