121751671602 has 48 divisors (see below), whose sum is σ = 267745304736. Its totient is φ = 36881644800.

The previous prime is 121751671567. The next prime is 121751671609. The reversal of 121751671602 is 206176157121.

It is a Smith number, since the sum of its digits (39) 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 (121751671609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2180193 + ... + 2235339.

It is an arithmetic number, because the mean of its divisors is an integer number (5578027182).

Almost surely, 2^121751671602 is an apocalyptic number.

121751671602 is an abundant number, since it is smaller than the sum of its proper divisors (145993633134).

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

121751671602 is a wasteful number, since it uses less digits than its factorization.

121751671602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58215 (or 58204 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 39.

The spelling of 121751671602 in words is "one hundred twenty-one billion, seven hundred fifty-one million, six hundred seventy-one thousand, six hundred two".