20450699572 has 6 divisors (see below), whose sum is σ = 35788724258. Its totient is φ = 10225349784.

The previous prime is 20450699569. The next prime is 20450699603. The reversal of 20450699572 is 27599605402.

It can be written as a sum of positive squares in only one way, i.e., 18142473636 + 2308225936 = 134694^2 + 48044^2 .

It is a super-2 number, since 2×20450699572² (a number of 21 digits) contains 22 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 (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2556337443 + ... + 2556337450.

Almost surely, 2^20450699572 is an apocalyptic number.

It is an amenable number.

20450699572 is a deficient number, since it is larger than the sum of its proper divisors (15338024686).

20450699572 is a wasteful number, since it uses less digits than its factorization.

20450699572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5112674897 (or 5112674895 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 49.

The spelling of 20450699572 in words is "twenty billion, four hundred fifty million, six hundred ninety-nine thousand, five hundred seventy-two".