1961142072119 has 8 divisors (see below), whose sum is σ = 2014325964000. Its totient is φ = 1907967656736.

The previous prime is 1961142072107. The next prime is 1961142072121. The reversal of 1961142072119 is 9112702411691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1961142072119 - 2¹⁶ = 1961142006583 is a prime.

It is a super-2 number, since 2×1961142072119² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1961142072119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1961142072419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1948619 + ... + 2778380.

It is an arithmetic number, because the mean of its divisors is an integer number (251790745500).

Almost surely, 2^{1961142072119} is an apocalyptic number.

1961142072119 is a deficient number, since it is larger than the sum of its proper divisors (53183891881).

1961142072119 is a wasteful number, since it uses less digits than its factorization.

1961142072119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4738249.

The product of its (nonzero) digits is 54432, while the sum is 44.

The spelling of 1961142072119 in words is "one trillion, nine hundred sixty-one billion, one hundred forty-two million, seventy-two thousand, one hundred nineteen".