20629752099 has 12 divisors (see below), whose sum is σ = 30234237768. Its totient is φ = 12502879840.

The previous prime is 20629752083. The next prime is 20629752131. The reversal of 20629752099 is 99025792602.

It is a happy number.

It is not a de Polignac number, because 20629752099 - 2⁴ = 20629752083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20629752019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28415274 + ... + 28415999.

It is an arithmetic number, because the mean of its divisors is an integer number (2519519814).

Almost surely, 2^20629752099 is an apocalyptic number.

20629752099 is a deficient number, since it is larger than the sum of its proper divisors (9604485669).

20629752099 is a wasteful number, since it uses less digits than its factorization.

20629752099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56831298 (or 56831287 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 51.

The spelling of 20629752099 in words is "twenty billion, six hundred twenty-nine million, seven hundred fifty-two thousand, ninety-nine".