121860742063671 has 64 divisors (see below), whose sum is σ = 208009408768000. Its totient is φ = 69879658055040.

The previous prime is 121860742063649. The next prime is 121860742063679. The reversal of 121860742063671 is 176360247068121.

121860742063671 is a `hidden beast` number, since 1 + 2 + 1 + 8 + 6 + 0 + 74 + 206 + 367 + 1 = 666.

It is not a de Polignac number, because 121860742063671 - 2³⁰ = 121859668321847 is a prime.

It is a super-2 number, since 2×121860742063671² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121860742063679) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 149369551 + ... + 150183168.

It is an arithmetic number, because the mean of its divisors is an integer number (3250147012000).

Almost surely, 2^{121860742063671} is an apocalyptic number.

121860742063671 is a deficient number, since it is larger than the sum of its proper divisors (86148666704329).

121860742063671 is a wasteful number, since it uses less digits than its factorization.

121860742063671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299552821 (or 299552815 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The spelling of 121860742063671 in words is "one hundred twenty-one trillion, eight hundred sixty billion, seven hundred forty-two million, sixty-three thousand, six hundred seventy-one".