1948955977511 has 2 divisors, whose sum is σ = 1948955977512. Its totient is φ = 1948955977510.

The previous prime is 1948955977487. The next prime is 1948955977571. The reversal of 1948955977511 is 1157795598491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1948955977511 - 2⁶ = 1948955977447 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1948955977571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 974477988755 + 974477988756.

It is an arithmetic number, because the mean of its divisors is an integer number (974477988756).

Almost surely, 2^{1948955977511} is an apocalyptic number.

1948955977511 is a deficient number, since it is larger than the sum of its proper divisors (1).

1948955977511 is an equidigital number, since it uses as much as digits as its factorization.

1948955977511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142884000, while the sum is 71.

The spelling of 1948955977511 in words is "one trillion, nine hundred forty-eight billion, nine hundred fifty-five million, nine hundred seventy-seven thousand, five hundred eleven".