121476302640 has 1280 divisors, whose sum is σ = 539759738880. Its totient is φ = 24690355200.

The previous prime is 121476302627. The next prime is 121476302641. The reversal of 121476302640 is 46203674121.

121476302640 is a `hidden beast` number, since 1 + 2 + 1 + 4 + 7 + 6 + 3 + 0 + 2 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 121476302595 and 121476302604.

It is not an unprimeable number, because it can be changed into a prime (121476302641) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 956506257 + ... + 956506383.

It is an arithmetic number, because the mean of its divisors is an integer number (421687296).

Almost surely, 2^121476302640 is an apocalyptic number.

121476302640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121476302640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269879869440).

121476302640 is an abundant number, since it is smaller than the sum of its proper divisors (418283436240).

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

121476302640 is a wasteful number, since it uses less digits than its factorization.

121476302640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

Adding to 121476302640 its reverse (46203674121), we get a palindrome (167679976761).

The spelling of 121476302640 in words is "one hundred twenty-one billion, four hundred seventy-six million, three hundred two thousand, six hundred forty".