61675590321 has 10 divisors (see below), whose sum is σ = 92132672082. Its totient is φ = 41117060160.

The previous prime is 61675590307. The next prime is 61675590343. The reversal of 61675590321 is 12309557616.

61675590321 is a `hidden beast` number, since 6 + 1 + 67 + 559 + 0 + 32 + 1 = 666.

61675590321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 47338880625 + 14336709696 = 217575^2 + 119736^2 .

It is not a de Polignac number, because 61675590321 - 2⁵ = 61675590289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61675590391) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 380713440 + ... + 380713601.

Almost surely, 2^61675590321 is an apocalyptic number.

It is an amenable number.

61675590321 is a deficient number, since it is larger than the sum of its proper divisors (30457081761).

61675590321 is an equidigital number, since it uses as much as digits as its factorization.

61675590321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761427053 (or 761427044 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The spelling of 61675590321 in words is "sixty-one billion, six hundred seventy-five million, five hundred ninety thousand, three hundred twenty-one".