61001005506 has 32 divisors (see below), whose sum is σ = 140528762880. Its totient is φ = 17291622096.

The previous prime is 61001005489. The next prime is 61001005511. The reversal of 61001005506 is 60550010016.

It is a super-2 number, since 2×61001005506² (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 15 ways as a sum of consecutive naturals, for example, 5712796 + ... + 5723463.

It is an arithmetic number, because the mean of its divisors is an integer number (4391523840).

Almost surely, 2^61001005506 is an apocalyptic number.

61001005506 is an abundant number, since it is smaller than the sum of its proper divisors (79527757374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61001005506 is a wasteful number, since it uses less digits than its factorization.

61001005506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11436398.

The product of its (nonzero) digits is 900, while the sum is 24.

The spelling of 61001005506 in words is "sixty-one billion, one million, five thousand, five hundred six".