612661250005 has 8 divisors (see below), whose sum is σ = 840221142912. Its totient is φ = 420110571408.

The previous prime is 612661249979. The next prime is 612661250009. The reversal of 612661250005 is 500052166216.

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 612661250005 - 2⁷ = 612661249877 is a prime.

It is a super-2 number, since 2×612661250005² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612661250009) 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, 8752303537 + ... + 8752303606.

It is an arithmetic number, because the mean of its divisors is an integer number (105027642864).

Almost surely, 2^612661250005 is an apocalyptic number.

It is an amenable number.

612661250005 is a deficient number, since it is larger than the sum of its proper divisors (227559892907).

612661250005 is a wasteful number, since it uses less digits than its factorization.

612661250005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17504607155.

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 612661250005 in words is "six hundred twelve billion, six hundred sixty-one million, two hundred fifty thousand, five".