20358474856960 has 40 divisors (see below), whose sum is σ = 48812624487396. Its totient is φ = 8143389941760.

The previous prime is 20358474856949. The next prime is 20358474856961. The reversal of 20358474856960 is 6965847485302.

It can be written as a sum of positive squares in 2 ways, for example, as 19279967682816 + 1078507174144 = 4390896^2 + 1038512^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (20358474856961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3976262061 + ... + 3976267180.

Almost surely, 2^{20358474856960} is an apocalyptic number.

20358474856960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20358474856960 is an abundant number, since it is smaller than the sum of its proper divisors (28454149630436).

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

20358474856960 is an frugal number, since it uses more digits than its factorization.

20358474856960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7952529264 (or 7952529248 counting only the distinct ones).

The product of its (nonzero) digits is 348364800, while the sum is 67.

The spelling of 20358474856960 in words is "twenty trillion, three hundred fifty-eight billion, four hundred seventy-four million, eight hundred fifty-six thousand, nine hundred sixty".