19477341481 has 16 divisors (see below), whose sum is σ = 21285055120. Its totient is φ = 17714350080.

The previous prime is 19477341479. The next prime is 19477341511. The reversal of 19477341481 is 18414377491.

It can be written as a sum of positive squares in 8 ways, for example, as 740112025 + 18737229456 = 27205^2 + 136884^2 .

It is a cyclic number.

It is not a de Polignac number, because 19477341481 - 2¹ = 19477341479 is a prime.

It is a super-2 number, since 2×19477341481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19477341431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 947371 + ... + 967711.

It is an arithmetic number, because the mean of its divisors is an integer number (1330315945).

Almost surely, 2^19477341481 is an apocalyptic number.

It is an amenable number.

19477341481 is a deficient number, since it is larger than the sum of its proper divisors (1807713639).

19477341481 is a wasteful number, since it uses less digits than its factorization.

19477341481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21436.

The product of its digits is 677376, while the sum is 49.

The spelling of 19477341481 in words is "nineteen billion, four hundred seventy-seven million, three hundred forty-one thousand, four hundred eighty-one".