202140778420801 has 16 divisors (see below), whose sum is σ = 234674036023680. Its totient is φ = 172076734170880.

The previous prime is 202140778420787. The next prime is 202140778420843. The reversal of 202140778420801 is 108024877041202.

It is not a de Polignac number, because 202140778420801 - 2¹⁷ = 202140778289729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (202140778420891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2743533541 + ... + 2743607218.

It is an arithmetic number, because the mean of its divisors is an integer number (14667127251480).

Almost surely, 2^{202140778420801} is an apocalyptic number.

It is an amenable number.

202140778420801 is a deficient number, since it is larger than the sum of its proper divisors (32533257602879).

202140778420801 is a wasteful number, since it uses less digits than its factorization.

202140778420801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5487140984.

The product of its (nonzero) digits is 401408, while the sum is 46.

The spelling of 202140778420801 in words is "two hundred two trillion, one hundred forty billion, seven hundred seventy-eight million, four hundred twenty thousand, eight hundred one".