2001653379783 has 12 divisors (see below), whose sum is σ = 2897863162480. Its totient is φ = 1331395867296.

The previous prime is 2001653379779. The next prime is 2001653379787. The reversal of 2001653379783 is 3879733561002.

2001653379783 is a `hidden beast` number, since 2 + 0 + 0 + 16 + 533 + 7 + 97 + 8 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (2001653379779) and next prime (2001653379787).

It is not a de Polignac number, because 2001653379783 - 2² = 2001653379779 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001653379787) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 253305766 + ... + 253313667.

Almost surely, 2^{2001653379783} is an apocalyptic number.

2001653379783 is a deficient number, since it is larger than the sum of its proper divisors (896209782697).

2001653379783 is a wasteful number, since it uses less digits than its factorization.

2001653379783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506619878 (or 506619875 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 54.

The spelling of 2001653379783 in words is "two trillion, one billion, six hundred fifty-three million, three hundred seventy-nine thousand, seven hundred eighty-three".