1967201965644 has 96 divisors (see below), whose sum is σ = 4797602611200. Its totient is φ = 626675808000.

The previous prime is 1967201965643. The next prime is 1967201965667. The reversal of 1967201965644 is 4465691027691.

It is not an unprimeable number, because it can be changed into a prime (1967201965643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9486469 + ... + 9691619.

It is an arithmetic number, because the mean of its divisors is an integer number (49975027200).

Almost surely, 2^{1967201965644} is an apocalyptic number.

It is an amenable number.

1967201965644 is an abundant number, since it is smaller than the sum of its proper divisors (2830400645556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1967201965644 is a wasteful number, since it uses less digits than its factorization.

1967201965644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205511 (or 205509 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 60.

The spelling of 1967201965644 in words is "one trillion, nine hundred sixty-seven billion, two hundred one million, nine hundred sixty-five thousand, six hundred forty-four".