20702772082 has 8 divisors (see below), whose sum is σ = 31169601900. Its totient is φ = 10312904784.

The previous prime is 20702772043. The next prime is 20702772109. The reversal of 20702772082 is 28027720702.

It can be written as a sum of positive squares in 2 ways, for example, as 18738598321 + 1964173761 = 136889^2 + 44319^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20702772082² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19239957 + ... + 19241032.

Almost surely, 2^20702772082 is an apocalyptic number.

20702772082 is a deficient number, since it is larger than the sum of its proper divisors (10466829818).

20702772082 is a wasteful number, since it uses less digits than its factorization.

20702772082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38481260.

The product of its (nonzero) digits is 43904, while the sum is 37.

The spelling of 20702772082 in words is "twenty billion, seven hundred two million, seven hundred seventy-two thousand, eighty-two".