20265547071 has 64 divisors (see below), whose sum is σ = 34009399296. Its totient is φ = 10427616000.

The previous prime is 20265547039. The next prime is 20265547121. The reversal of 20265547071 is 17074556202.

It is not a de Polignac number, because 20265547071 - 2⁵ = 20265547039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20265547031) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16986451 + ... + 16987643.

It is an arithmetic number, because the mean of its divisors is an integer number (531396864).

Almost surely, 2^20265547071 is an apocalyptic number.

20265547071 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20265547071 is a deficient number, since it is larger than the sum of its proper divisors (13743852225).

20265547071 is a wasteful number, since it uses less digits than its factorization.

20265547071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852.

The product of its (nonzero) digits is 117600, while the sum is 39.

The spelling of 20265547071 in words is "twenty billion, two hundred sixty-five million, five hundred forty-seven thousand, seventy-one".