61495849805 has 32 divisors (see below), whose sum is σ = 82516008960. Its totient is φ = 43684220160.

The previous prime is 61495849771. The next prime is 61495849813. The reversal of 61495849805 is 50894859416.

It is a happy number.

It is not a de Polignac number, because 61495849805 - 2¹⁰ = 61495848781 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 (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 450644 + ... + 571026.

It is an arithmetic number, because the mean of its divisors is an integer number (2578625280).

Almost surely, 2^61495849805 is an apocalyptic number.

61495849805 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61495849805 is a deficient number, since it is larger than the sum of its proper divisors (21020159155).

61495849805 is a wasteful number, since it uses less digits than its factorization.

61495849805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120701.

The product of its (nonzero) digits is 12441600, while the sum is 59.

The spelling of 61495849805 in words is "sixty-one billion, four hundred ninety-five million, eight hundred forty-nine thousand, eight hundred five".