121786250628 has 48 divisors (see below), whose sum is σ = 324990288000. Its totient is φ = 34771755264.

The previous prime is 121786250627. The next prime is 121786250633. The reversal of 121786250628 is 826052687121.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (121786250627) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 385503 + ... + 626246.

It is an arithmetic number, because the mean of its divisors is an integer number (6770631000).

Almost surely, 2^121786250628 is an apocalyptic number.

It is an amenable number.

121786250628 is an abundant number, since it is smaller than the sum of its proper divisors (203204037372).

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

121786250628 is a wasteful number, since it uses less digits than its factorization.

121786250628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013196 (or 1013194 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 121786250628 in words is "one hundred twenty-one billion, seven hundred eighty-six million, two hundred fifty thousand, six hundred twenty-eight".