2013208649640 has 128 divisors (see below), whose sum is σ = 6802623100800. Its totient is φ = 529501432320.

The previous prime is 2013208649623. The next prime is 2013208649773. The reversal of 2013208649640 is 469468023102.

2013208649640 is a `hidden beast` number, since 20 + 1 + 3 + 20 + 86 + 496 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12688846 + ... + 12846525.

It is an arithmetic number, because the mean of its divisors is an integer number (53145492975).

Almost surely, 2^{2013208649640} is an apocalyptic number.

2013208649640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2013208649640 is an abundant number, since it is smaller than the sum of its proper divisors (4789414451160).

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

2013208649640 is a wasteful number, since it uses less digits than its factorization.

2013208649640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25535464 (or 25535454 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 2013208649640 in words is "two trillion, thirteen billion, two hundred eight million, six hundred forty-nine thousand, six hundred forty".