121938703845 has 128 divisors (see below), whose sum is σ = 229806720000. Its totient is φ = 54066216960.

The previous prime is 121938703753. The next prime is 121938703927. The reversal of 121938703845 is 548307839121.

It is not a de Polignac number, because 121938703845 - 2⁹ = 121938703333 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 271578181 + ... + 271578629.

It is an arithmetic number, because the mean of its divisors is an integer number (1795365000).

Almost surely, 2^121938703845 is an apocalyptic number.

121938703845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121938703845 is a deficient number, since it is larger than the sum of its proper divisors (107868016155).

121938703845 is a wasteful number, since it uses less digits than its factorization.

121938703845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023.

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 121938703845 in words is "one hundred twenty-one billion, nine hundred thirty-eight million, seven hundred three thousand, eight hundred forty-five".