1951403885061 has 16 divisors (see below), whose sum is σ = 2656651121280. Its totient is φ = 1273830117120.

The previous prime is 1951403885033. The next prime is 1951403885077. The reversal of 1951403885061 is 1605883041591.

It is not a de Polignac number, because 1951403885061 - 2²⁶ = 1951336776197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1951403884995 and 1951403885013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1951403881061) 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 15 ways as a sum of consecutive naturals, for example, 35451280 + ... + 35506281.

It is an arithmetic number, because the mean of its divisors is an integer number (166040695080).

Almost surely, 2^{1951403885061} is an apocalyptic number.

It is an amenable number.

1951403885061 is a deficient number, since it is larger than the sum of its proper divisors (705247236219).

1951403885061 is a wasteful number, since it uses less digits than its factorization.

1951403885061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70957756.

The product of its (nonzero) digits is 1036800, while the sum is 51.

The spelling of 1951403885061 in words is "one trillion, nine hundred fifty-one billion, four hundred three million, eight hundred eighty-five thousand, sixty-one".