20598277441 has 45 divisors (see below), whose sum is σ = 25135930313. Its totient is φ = 16878069600.

The previous prime is 20598277421. The next prime is 20598277489. The reversal of 20598277441 is 14477289502.

The square root of 20598277441 is 143521.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 6768517441 + 13829760000 = 82271^2 + 117600^2 .

It is not a de Polignac number, because 20598277441 - 2¹⁵ = 20598244673 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20598277421) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 203943291 + ... + 203943391.

Almost surely, 2^20598277441 is an apocalyptic number.

20598277441 is the 143521-st square number.

20598277441 is the 71761-st centered octagonal number.

It is an amenable number.

20598277441 is a deficient number, since it is larger than the sum of its proper divisors (4537652872).

20598277441 is an frugal number, since it uses more digits than its factorization.

20598277441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 49.

Multiplying 20598277441 by its sum of digits (49), we get a square (1009315594609 = 1004647²).

20598277441 divided by its sum of digits (49) gives a square (420373009 = 20503²).

The spelling of 20598277441 in words is "twenty billion, five hundred ninety-eight million, two hundred seventy-seven thousand, four hundred forty-one".