61674688413 has 32 divisors (see below), whose sum is σ = 100798346880. Its totient is φ = 37027946880.

The previous prime is 61674688409. The next prime is 61674688423. The reversal of 61674688413 is 31488647616.

61674688413 is a `hidden beast` number, since 6 + 167 + 4 + 68 + 8 + 413 = 666.

It is not a de Polignac number, because 61674688413 - 2² = 61674688409 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 61674688413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61674688423) 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 31 ways as a sum of consecutive naturals, for example, 2128431 + ... + 2157212.

It is an arithmetic number, because the mean of its divisors is an integer number (3149948340).

Almost surely, 2^61674688413 is an apocalyptic number.

It is an amenable number.

61674688413 is a deficient number, since it is larger than the sum of its proper divisors (39123658467).

61674688413 is a wasteful number, since it uses less digits than its factorization.

61674688413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4285706 (or 4285700 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The spelling of 61674688413 in words is "sixty-one billion, six hundred seventy-four million, six hundred eighty-eight thousand, four hundred thirteen".