61671000505 has 8 divisors (see below), whose sum is σ = 75259526400. Its totient is φ = 48500583216.

The previous prime is 61671000449. The next prime is 61671000533. The reversal of 61671000505 is 50500017616.

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 61671000505 - 2⁹ = 61670999993 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104526825 + ... + 104527414.

It is an arithmetic number, because the mean of its divisors is an integer number (9407440800).

Almost surely, 2^61671000505 is an apocalyptic number.

It is an amenable number.

61671000505 is a deficient number, since it is larger than the sum of its proper divisors (13588525895).

61671000505 is a wasteful number, since it uses less digits than its factorization.

61671000505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209054303.

The product of its (nonzero) digits is 6300, while the sum is 31.

The spelling of 61671000505 in words is "sixty-one billion, six hundred seventy-one million, five hundred five", and thus it is an aban number.