20003507651705 has 32 divisors (see below), whose sum is σ = 25660322294400. Its totient is φ = 14926590144000.

The previous prime is 20003507651683. The next prime is 20003507651723. The reversal of 20003507651705 is 50715670530002.

It is a de Polignac number, because none of the positive numbers 2^k-20003507651705 is a prime.

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, 4105916 + ... + 7540925.

It is an arithmetic number, because the mean of its divisors is an integer number (801885071700).

Almost surely, 2^{20003507651705} is an apocalyptic number.

It is an amenable number.

20003507651705 is a deficient number, since it is larger than the sum of its proper divisors (5656814642695).

20003507651705 is a wasteful number, since it uses less digits than its factorization.

20003507651705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11647145.

The product of its (nonzero) digits is 220500, while the sum is 41.

The spelling of 20003507651705 in words is "twenty trillion, three billion, five hundred seven million, six hundred fifty-one thousand, seven hundred five".