61808146875 has 48 divisors (see below), whose sum is σ = 114452362080. Its totient is φ = 32964300000.

The previous prime is 61808146843. The next prime is 61808146877. The reversal of 61808146875 is 57864180816.

It is a happy number.

61808146875 is a `hidden beast` number, since 618 + 0 + 8 + 14 + 6 + 8 + 7 + 5 = 666.

It is not a de Polignac number, because 61808146875 - 2⁵ = 61808146843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61808146877) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 281896 + ... + 450645.

It is an arithmetic number, because the mean of its divisors is an integer number (2384424210).

Almost surely, 2^61808146875 is an apocalyptic number.

61808146875 is a deficient number, since it is larger than the sum of its proper divisors (52644215205).

61808146875 is an frugal number, since it uses more digits than its factorization.

61808146875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732575 (or 732549 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 54.

The spelling of 61808146875 in words is "sixty-one billion, eight hundred eight million, one hundred forty-six thousand, eight hundred seventy-five".