20270173740 has 24 divisors (see below), whose sum is σ = 56756486640. Its totient is φ = 5405379648.

The previous prime is 20270173733. The next prime is 20270173741. The reversal of 20270173740 is 4737107202.

It is not an unprimeable number, because it can be changed into a prime (20270173741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168918055 + ... + 168918174.

It is an arithmetic number, because the mean of its divisors is an integer number (2364853610).

Almost surely, 2^20270173740 is an apocalyptic number.

20270173740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20270173740 is an abundant number, since it is smaller than the sum of its proper divisors (36486312900).

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

20270173740 is a wasteful number, since it uses less digits than its factorization.

20270173740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337836241 (or 337836239 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 33.

The spelling of 20270173740 in words is "twenty billion, two hundred seventy million, one hundred seventy-three thousand, seven hundred forty".