20977923322 has 16 divisors (see below), whose sum is σ = 32264833032. Its totient is φ = 10225500480.

The previous prime is 20977923287. The next prime is 20977923331. The reversal of 20977923322 is 22332977902.

It can be written as a sum of positive squares in 4 ways, for example, as 14544118801 + 6433804521 = 120599^2 + 80211^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 613629 + ... + 646912.

Almost surely, 2^20977923322 is an apocalyptic number.

20977923322 is a deficient number, since it is larger than the sum of its proper divisors (11286909710).

20977923322 is a wasteful number, since it uses less digits than its factorization.

20977923322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260753.

The product of its (nonzero) digits is 571536, while the sum is 46.

The spelling of 20977923322 in words is "twenty billion, nine hundred seventy-seven million, nine hundred twenty-three thousand, three hundred twenty-two".