74507516506061 has 4 divisors (see below), whose sum is σ = 74776496710332. Its totient is φ = 74238536301792.

The previous prime is 74507516506051. The next prime is 74507516506133. The reversal of 74507516506061 is 16060561570547.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30907973536036 + 43599542970025 = 5559494^2 + 6602995^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74507516506061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 74507516505994 and 74507516506012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74507516506051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134490101720 + ... + 134490102273.

It is an arithmetic number, because the mean of its divisors is an integer number (18694124177583).

Almost surely, 2^{74507516506061} is an apocalyptic number.

It is an amenable number.

74507516506061 is a deficient number, since it is larger than the sum of its proper divisors (268980204271).

74507516506061 is a wasteful number, since it uses less digits than its factorization.

74507516506061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268980204270.

The product of its (nonzero) digits is 5292000, while the sum is 53.

The spelling of 74507516506061 in words is "seventy-four trillion, five hundred seven billion, five hundred sixteen million, five hundred six thousand, sixty-one".