20277571712 has 192 divisors, whose sum is σ = 44641238400. Its totient is φ = 9167192064.

The previous prime is 20277571709. The next prime is 20277571753. The reversal of 20277571712 is 21717577202.

It is a super-2 number, since 2×20277571712² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20277571712.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 186032714 + ... + 186032822.

It is an arithmetic number, because the mean of its divisors is an integer number (232506450).

Almost surely, 2^20277571712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20277571712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22320619200).

20277571712 is an abundant number, since it is smaller than the sum of its proper divisors (24363666688).

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

20277571712 is a wasteful number, since it uses less digits than its factorization.

20277571712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 96040, while the sum is 41.

The spelling of 20277571712 in words is "twenty billion, two hundred seventy-seven million, five hundred seventy-one thousand, seven hundred twelve".