121563482078 has 32 divisors (see below), whose sum is σ = 194551531776. Its totient is φ = 56846262528.

The previous prime is 121563482077. The next prime is 121563482083. The reversal of 121563482078 is 870284365121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121563482077) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206225 + ... + 534467.

It is an arithmetic number, because the mean of its divisors is an integer number (6079735368).

Almost surely, 2^121563482078 is an apocalyptic number.

121563482078 is a deficient number, since it is larger than the sum of its proper divisors (72988049698).

121563482078 is a wasteful number, since it uses less digits than its factorization.

121563482078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328448.

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 121563482078 in words is "one hundred twenty-one billion, five hundred sixty-three million, four hundred eighty-two thousand, seventy-eight".