61001000005 has 8 divisors (see below), whose sum is σ = 79855854624. Its totient is φ = 44364363600.

The previous prime is 61000999987. The next prime is 61001000041. The reversal of 61001000005 is 50000010016.

61001000005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 61001000005 - 2¹³ = 61000991813 is a prime.

It is a super-2 number, since 2×61001000005² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 554554491 + ... + 554554600.

It is an arithmetic number, because the mean of its divisors is an integer number (9981981828).

Almost surely, 2^61001000005 is an apocalyptic number.

It is an amenable number.

61001000005 is a deficient number, since it is larger than the sum of its proper divisors (18854854619).

61001000005 is a wasteful number, since it uses less digits than its factorization.

61001000005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109109107.

The product of its (nonzero) digits is 30, while the sum is 13.

The spelling of 61001000005 in words is "sixty-one billion, one million, five", and thus it is an aban number and an uban number.