20630756929 has 8 divisors (see below), whose sum is σ = 21914575488. Its totient is φ = 19354743360.

The previous prime is 20630756921. The next prime is 20630756941. The reversal of 20630756929 is 92965703602.

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

It is a cyclic number.

It is not a de Polignac number, because 20630756929 - 2³ = 20630756921 is a prime.

It is a super-2 number, since 2×20630756929² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20630756921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1945797 + ... + 1956370.

It is an arithmetic number, because the mean of its divisors is an integer number (2739321936).

Almost surely, 2^20630756929 is an apocalyptic number.

It is an amenable number.

20630756929 is a deficient number, since it is larger than the sum of its proper divisors (1283818559).

20630756929 is a wasteful number, since it uses less digits than its factorization.

20630756929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3902495.

The product of its (nonzero) digits is 1224720, while the sum is 49.

The spelling of 20630756929 in words is "twenty billion, six hundred thirty million, seven hundred fifty-six thousand, nine hundred twenty-nine".