20673212802 has 32 divisors (see below), whose sum is σ = 45676154880. Its totient is φ = 6185309520.

The previous prime is 20673212801. The next prime is 20673212837. The reversal of 20673212802 is 20821237602.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (20673212801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1977258 + ... + 1987685.

It is an arithmetic number, because the mean of its divisors is an integer number (1427379840).

Almost surely, 2^20673212802 is an apocalyptic number.

20673212802 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20673212802 is an abundant number, since it is smaller than the sum of its proper divisors (25002942078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20673212802 is a wasteful number, since it uses less digits than its factorization.

20673212802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3965038.

The product of its (nonzero) digits is 16128, while the sum is 33.

The spelling of 20673212802 in words is "twenty billion, six hundred seventy-three million, two hundred twelve thousand, eight hundred two".