201378042500 has 30 divisors (see below), whose sum is σ = 440373508806. Its totient is φ = 80551216000.

The previous prime is 201378042469. The next prime is 201378042511. The reversal of 201378042500 is 5240873102.

It can be written as a sum of positive squares in 5 ways, for example, as 132548421184 + 68829621316 = 364072^2 + 262354^2 .

It is a super-2 number, since 2×201378042500² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 40273109 + ... + 40278108.

Almost surely, 2^201378042500 is an apocalyptic number.

201378042500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201378042500 is an abundant number, since it is smaller than the sum of its proper divisors (238995466306).

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

201378042500 is an equidigital number, since it uses as much as digits as its factorization.

201378042500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80551241 (or 80551224 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The spelling of 201378042500 in words is "two hundred one billion, three hundred seventy-eight million, forty-two thousand, five hundred".