261023400300 has 144 divisors (see below), whose sum is σ = 856128815360. Its totient is φ = 60870216960.

The previous prime is 261023400299. The next prime is 261023400329. The reversal of 261023400300 is 3004320162.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1687192 + ... + 1835391.

Almost surely, 2^261023400300 is an apocalyptic number.

261023400300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

261023400300 is an abundant number, since it is smaller than the sum of its proper divisors (595105415060).

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

261023400300 is a wasteful number, since it uses less digits than its factorization.

261023400300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3522632 (or 3522625 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 261023400300 its reverse (3004320162), we get a palindrome (264027720462).

The spelling of 261023400300 in words is "two hundred sixty-one billion, twenty-three million, four hundred thousand, three hundred".