200040646403661 has 64 divisors (see below), whose sum is σ = 314519844741120. Its totient is φ = 110727846028800.

The previous prime is 200040646403659. The next prime is 200040646403677. The reversal of 200040646403661 is 166304646040002.

It is not a de Polignac number, because 200040646403661 - 2¹ = 200040646403659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200040646403261) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3732562281 + ... + 3732615873.

It is an arithmetic number, because the mean of its divisors is an integer number (4914372574080).

Almost surely, 2^{200040646403661} is an apocalyptic number.

200040646403661 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

200040646403661 is a deficient number, since it is larger than the sum of its proper divisors (114479198337459).

200040646403661 is a wasteful number, since it uses less digits than its factorization.

200040646403661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96186.

The product of its (nonzero) digits is 497664, while the sum is 42.

The spelling of 200040646403661 in words is "two hundred trillion, forty billion, six hundred forty-six million, four hundred three thousand, six hundred sixty-one".