20701689734 has 32 divisors (see below), whose sum is σ = 34035206400. Its totient is φ = 9365574240.

The previous prime is 20701689721. The next prime is 20701689797. The reversal of 20701689734 is 43798610702.

It is a super-3 number, since 3×20701689734³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9499457 + ... + 9501635.

It is an arithmetic number, because the mean of its divisors is an integer number (1063600200).

Almost surely, 2^20701689734 is an apocalyptic number.

20701689734 is a deficient number, since it is larger than the sum of its proper divisors (13333516666).

20701689734 is a wasteful number, since it uses less digits than its factorization.

20701689734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4028.

The product of its (nonzero) digits is 508032, while the sum is 47.

The spelling of 20701689734 in words is "twenty billion, seven hundred one million, six hundred eighty-nine thousand, seven hundred thirty-four".