20354415560 has 32 divisors (see below), whose sum is σ = 46914449400. Its totient is φ = 7943185920.

The previous prime is 20354415533. The next prime is 20354415569. The reversal of 20354415560 is 6551445302.

It can be written as a sum of positive squares in 4 ways, for example, as 12076691236 + 8277724324 = 109894^2 + 90982^2 .

It is a super-2 number, since 2×20354415560² (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 20354415560.

It is not an unprimeable number, because it can be changed into a prime (20354415569) 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, 6203975 + ... + 6207254.

Almost surely, 2^20354415560 is an apocalyptic number.

20354415560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20354415560 is an abundant number, since it is smaller than the sum of its proper divisors (26560033840).

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

20354415560 is a wasteful number, since it uses less digits than its factorization.

20354415560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12411281 (or 12411277 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 20354415560 in words is "twenty billion, three hundred fifty-four million, four hundred fifteen thousand, five hundred sixty".