61763770657 has 8 divisors (see below), whose sum is σ = 62114798592. Its totient is φ = 61413031200.

The previous prime is 61763770631. The next prime is 61763770727. The reversal of 61763770657 is 75607736716.

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 61763770657 - 2⁷ = 61763770529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61763770598 and 61763770607.

It is not an unprimeable number, because it can be changed into a prime (61763770157) 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, 364788 + ... + 506554.

It is an arithmetic number, because the mean of its divisors is an integer number (7764349824).

Almost surely, 2^61763770657 is an apocalyptic number.

It is an amenable number.

61763770657 is a deficient number, since it is larger than the sum of its proper divisors (351027935).

61763770657 is a wasteful number, since it uses less digits than its factorization.

61763770657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144239.

The product of its (nonzero) digits is 7779240, while the sum is 55.

The spelling of 61763770657 in words is "sixty-one billion, seven hundred sixty-three million, seven hundred seventy thousand, six hundred fifty-seven".