201961765942 has 16 divisors (see below), whose sum is σ = 310733794800. Its totient is φ = 98414209440.

The previous prime is 201961765937. The next prime is 201961765949. The reversal of 201961765942 is 249567169102.

It is a super-2 number, since 2×201961765942² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201961765942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201961765949) 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 7 ways as a sum of consecutive naturals, for example, 7580392 + ... + 7606987.

It is an arithmetic number, because the mean of its divisors is an integer number (19420862175).

Almost surely, 2^201961765942 is an apocalyptic number.

201961765942 is a deficient number, since it is larger than the sum of its proper divisors (108772028858).

201961765942 is a wasteful number, since it uses less digits than its factorization.

201961765942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15187551.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 201961765942 in words is "two hundred one billion, nine hundred sixty-one million, seven hundred sixty-five thousand, nine hundred forty-two".