61785628097 has 8 divisors (see below), whose sum is σ = 65162345760. Its totient is φ = 58421394720.

The previous prime is 61785628049. The next prime is 61785628169. The reversal of 61785628097 is 79082658716.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61785628097 - 2¹⁰ = 61785627073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61785628007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3110903 + ... + 3130700.

It is an arithmetic number, because the mean of its divisors is an integer number (8145293220).

Almost surely, 2^61785628097 is an apocalyptic number.

It is an amenable number.

61785628097 is a deficient number, since it is larger than the sum of its proper divisors (3376717663).

61785628097 is a wasteful number, since it uses less digits than its factorization.

61785628097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6242143.

The product of its (nonzero) digits is 10160640, while the sum is 59.

The spelling of 61785628097 in words is "sixty-one billion, seven hundred eighty-five million, six hundred twenty-eight thousand, ninety-seven".