20077269408 has 108 divisors (see below), whose sum is σ = 66416370930. Its totient is φ = 5736358656.

The previous prime is 20077269403. The next prime is 20077269437. The reversal of 20077269408 is 80496277002.

It can be written as a sum of positive squares in only one way, i.e., 18908450064 + 1168819344 = 137508^2 + 34188^2 .

It is not an unprimeable number, because it can be changed into a prime (20077269403) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 697243 + ... + 725466.

Almost surely, 2^20077269408 is an apocalyptic number.

20077269408 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20077269408 is an abundant number, since it is smaller than the sum of its proper divisors (46339101522).

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

20077269408 is a wasteful number, since it uses less digits than its factorization.

20077269408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422739 (or 1422721 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 20077269408 in words is "twenty billion, seventy-seven million, two hundred sixty-nine thousand, four hundred eight".