1950769878021 has 10 divisors (see below), whose sum is σ = 2914113027782. Its totient is φ = 1300513251960.

The previous prime is 1950769877977. The next prime is 1950769878047. The reversal of 1950769878021 is 1208789670591.

1950769878021 is a `hidden beast` number, since 19 + 507 + 6 + 98 + 7 + 8 + 0 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1238855815521 + 711914062500 = 1113039^2 + 843750^2 .

It is not a de Polignac number, because 1950769878021 - 2⁶ = 1950769877957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1950769878021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1950769878221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 12041789290 + ... + 12041789451.

Almost surely, 2^{1950769878021} is an apocalyptic number.

It is an amenable number.

1950769878021 is a deficient number, since it is larger than the sum of its proper divisors (963343149761).

1950769878021 is an equidigital number, since it uses as much as digits as its factorization.

1950769878021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24083578753 (or 24083578744 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 63.

The spelling of 1950769878021 in words is "one trillion, nine hundred fifty billion, seven hundred sixty-nine million, eight hundred seventy-eight thousand, twenty-one".