61247372048775 has 144 divisors (see below), whose sum is σ = 121594039352448. Its totient is φ = 29220152544000.

The previous prime is 61247372048743. The next prime is 61247372048809. The reversal of 61247372048775 is 57784027374216.

61247372048775 is a `hidden beast` number, since 6 + 12 + 4 + 7 + 3 + 72 + 0 + 487 + 75 = 666.

It is not a de Polignac number, because 61247372048775 - 2⁵ = 61247372048743 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 150199665 + ... + 150606885.

Almost surely, 2^{61247372048775} is an apocalyptic number.

61247372048775 is a deficient number, since it is larger than the sum of its proper divisors (60346667303673).

61247372048775 is a wasteful number, since it uses less digits than its factorization.

61247372048775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408222 (or 408214 counting only the distinct ones).

The product of its (nonzero) digits is 110638080, while the sum is 63.

The spelling of 61247372048775 in words is "sixty-one trillion, two hundred forty-seven billion, three hundred seventy-two million, forty-eight thousand, seven hundred seventy-five".