61671000506 has 8 divisors (see below), whose sum is σ = 92542799700. Its totient is φ = 30823400608.

The previous prime is 61671000449. The next prime is 61671000533. The reversal of 61671000506 is 60500017616.

It can be written as a sum of positive squares in 2 ways, for example, as 49036116481 + 12634884025 = 221441^2 + 112405^2 .

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

It is a super-2 number, since 2×61671000506² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6043451 + ... + 6053646.

Almost surely, 2^61671000506 is an apocalyptic number.

61671000506 is a deficient number, since it is larger than the sum of its proper divisors (30871799194).

61671000506 is a wasteful number, since it uses less digits than its factorization.

61671000506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12099648.

The product of its (nonzero) digits is 7560, while the sum is 32.

The spelling of 61671000506 in words is "sixty-one billion, six hundred seventy-one million, five hundred six", and thus it is an aban number.