61090640812605 has 8 divisors (see below), whose sum is σ = 97745025300192. Its totient is φ = 32581675100048.

The previous prime is 61090640812559. The next prime is 61090640812633. The reversal of 61090640812605 is 50621804609016.

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 61090640812605 - 2¹⁵ = 61090640779837 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2036354693739 + ... + 2036354693768.

It is an arithmetic number, because the mean of its divisors is an integer number (12218128162524).

Almost surely, 2^{61090640812605} is an apocalyptic number.

It is an amenable number.

61090640812605 is a deficient number, since it is larger than the sum of its proper divisors (36654384487587).

61090640812605 is a wasteful number, since it uses less digits than its factorization.

61090640812605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4072709387515.

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 61090640812605 in words is "sixty-one trillion, ninety billion, six hundred forty million, eight hundred twelve thousand, six hundred five".