20354965960 has 64 divisors (see below), whose sum is σ = 54617068800. Its totient is φ = 6675415296.

The previous prime is 20354965919. The next prime is 20354965973. The reversal of 20354965960 is 6956945302.

It is a happy number.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1573915 + ... + 1586794.

It is an arithmetic number, because the mean of its divisors is an integer number (853391700).

Almost surely, 2^20354965960 is an apocalyptic number.

20354965960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20354965960 is an abundant number, since it is smaller than the sum of its proper divisors (34262102840).

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

20354965960 is a wasteful number, since it uses less digits than its factorization.

20354965960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3160750 (or 3160746 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 49.

The spelling of 20354965960 in words is "twenty billion, three hundred fifty-four million, nine hundred sixty-five thousand, nine hundred sixty".