74661890995278 has 12 divisors (see below), whose sum is σ = 161767430489808. Its totient is φ = 24887296998420.

The previous prime is 74661890995207. The next prime is 74661890995291. The reversal of 74661890995278 is 87259909816647.

74661890995278 is a `hidden beast` number, since 7 + 4 + 6 + 6 + 1 + 89 + 0 + 9 + 9 + 527 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 74661890995197 and 74661890995206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2073941416518 + ... + 2073941416553.

It is an arithmetic number, because the mean of its divisors is an integer number (13480619207484).

Almost surely, 2^{74661890995278} is an apocalyptic number.

74661890995278 is an abundant number, since it is smaller than the sum of its proper divisors (87105539494530).

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

74661890995278 is a wasteful number, since it uses less digits than its factorization.

74661890995278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4147882833079 (or 4147882833076 counting only the distinct ones).

The product of its (nonzero) digits is 3292047360, while the sum is 81.

The spelling of 74661890995278 in words is "seventy-four trillion, six hundred sixty-one billion, eight hundred ninety million, nine hundred ninety-five thousand, two hundred seventy-eight".