20477708605730 has 16 divisors (see below), whose sum is σ = 37217738361024. Its totient is φ = 8111558359920.

The previous prime is 20477708605729. The next prime is 20477708605741. The reversal of 20477708605730 is 3750680777402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9940634216 + ... + 9940636275.

It is an arithmetic number, because the mean of its divisors is an integer number (2326108647564).

Almost surely, 2^{20477708605730} is an apocalyptic number.

20477708605730 is a deficient number, since it is larger than the sum of its proper divisors (16740029755294).

20477708605730 is a wasteful number, since it uses less digits than its factorization.

20477708605730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19881270601.

The product of its (nonzero) digits is 13829760, while the sum is 56.

The spelling of 20477708605730 in words is "twenty trillion, four hundred seventy-seven billion, seven hundred eight million, six hundred five thousand, seven hundred thirty".