61861658075375 has 16 divisors (see below), whose sum is σ = 80560016641728. Its totient is φ = 47337616612000.

The previous prime is 61861658075291. The next prime is 61861658075383. The reversal of 61861658075375 is 57357085616816.

It is not a de Polignac number, because 61861658075375 - 2¹⁰ = 61861658074351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10758546356 + ... + 10758552105.

It is an arithmetic number, because the mean of its divisors is an integer number (5035001040108).

Almost surely, 2^{61861658075375} is an apocalyptic number.

61861658075375 is a deficient number, since it is larger than the sum of its proper divisors (18698358566353).

61861658075375 is a wasteful number, since it uses less digits than its factorization.

61861658075375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21517098499 (or 21517098489 counting only the distinct ones).

The product of its (nonzero) digits is 254016000, while the sum is 68.

The spelling of 61861658075375 in words is "sixty-one trillion, eight hundred sixty-one billion, six hundred fifty-eight million, seventy-five thousand, three hundred seventy-five".