61658767967 has 8 divisors (see below), whose sum is σ = 65289526416. Its totient is φ = 58028428672.

The previous prime is 61658767957. The next prime is 61658767969. The reversal of 61658767967 is 76976785616.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61658767967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61658767897 and 61658767906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61658767969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228368 + ... + 418890.

It is an arithmetic number, because the mean of its divisors is an integer number (8161190802).

Almost surely, 2^61658767967 is an apocalyptic number.

61658767967 is a deficient number, since it is larger than the sum of its proper divisors (3630758449).

61658767967 is a wasteful number, since it uses less digits than its factorization.

61658767967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209577.

The product of its digits is 160030080, while the sum is 68.

The spelling of 61658767967 in words is "sixty-one billion, six hundred fifty-eight million, seven hundred sixty-seven thousand, nine hundred sixty-seven".