61001056005 has 32 divisors (see below), whose sum is σ = 102810316800. Its totient is φ = 30800077632.

The previous prime is 61001056001. The next prime is 61001056007. The reversal of 61001056005 is 50065010016.

It is not a de Polignac number, because 61001056005 - 2² = 61001056001 is a prime.

It is a super-2 number, since 2×61001056005² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61001056001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 338436 + ... + 486354.

It is an arithmetic number, because the mean of its divisors is an integer number (3212822400).

Almost surely, 2^61001056005 is an apocalyptic number.

It is an amenable number.

61001056005 is a deficient number, since it is larger than the sum of its proper divisors (41809260795).

61001056005 is a wasteful number, since it uses less digits than its factorization.

61001056005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149393.

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

The spelling of 61001056005 in words is "sixty-one billion, one million, fifty-six thousand, five".