20883998029 has 4 divisors (see below), whose sum is σ = 21983155840. Its totient is φ = 19784840220.

The previous prime is 20883997961. The next prime is 20883998033. The reversal of 20883998029 is 92089938802.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20883998029 - 2¹⁷ = 20883866957 is a prime.

It is a super-2 number, since 2×20883998029² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20883998329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 549578877 + ... + 549578914.

It is an arithmetic number, because the mean of its divisors is an integer number (5495788960).

Almost surely, 2^20883998029 is an apocalyptic number.

It is an amenable number.

20883998029 is a deficient number, since it is larger than the sum of its proper divisors (1099157811).

20883998029 is a wasteful number, since it uses less digits than its factorization.

20883998029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099157810.

The product of its (nonzero) digits is 4478976, while the sum is 58.

The spelling of 20883998029 in words is "twenty billion, eight hundred eighty-three million, nine hundred ninety-eight thousand, twenty-nine".