2001043615636 has 48 divisors (see below), whose sum is σ = 3935365910784. Its totient is φ = 883358251776.

The previous prime is 2001043615621. The next prime is 2001043615673. The reversal of 2001043615636 is 6365163401002.

It is a junction number, because it is equal to n+sod(n) for n = 2001043615595 and 2001043615604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35017840 + ... + 35074936.

It is an arithmetic number, because the mean of its divisors is an integer number (81986789808).

Almost surely, 2^{2001043615636} is an apocalyptic number.

2001043615636 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2001043615636 is a deficient number, since it is larger than the sum of its proper divisors (1934322295148).

2001043615636 is a wasteful number, since it uses less digits than its factorization.

2001043615636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86440 (or 86438 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 2001043615636 in words is "two trillion, one billion, forty-three million, six hundred fifteen thousand, six hundred thirty-six".