20883563146 has 4 divisors (see below), whose sum is σ = 31325344722. Its totient is φ = 10441781572.

The previous prime is 20883563101. The next prime is 20883563167. The reversal of 20883563146 is 64136538802.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15070263121 + 5813300025 = 122761^2 + 76245^2 .

It is a super-2 number, since 2×20883563146² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20883563096 and 20883563105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5220890785 + ... + 5220890788.

Almost surely, 2^20883563146 is an apocalyptic number.

20883563146 is a deficient number, since it is larger than the sum of its proper divisors (10441781576).

20883563146 is a wasteful number, since it uses less digits than its factorization.

20883563146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10441781575.

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 20883563146 in words is "twenty billion, eight hundred eighty-three million, five hundred sixty-three thousand, one hundred forty-six".