61771265757011 has 8 divisors (see below), whose sum is σ = 65023618270800. Its totient is φ = 58519036569600.

The previous prime is 61771265756999. The next prime is 61771265757053. The reversal of 61771265757011 is 11075756217716.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61771265757011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61771265753011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29802590 + ... + 31807811.

It is an arithmetic number, because the mean of its divisors is an integer number (8127952283850).

Almost surely, 2^{61771265757011} is an apocalyptic number.

61771265757011 is a deficient number, since it is larger than the sum of its proper divisors (3252352513789).

61771265757011 is a wasteful number, since it uses less digits than its factorization.

61771265757011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61663189.

The product of its (nonzero) digits is 4321800, while the sum is 56.

The spelling of 61771265757011 in words is "sixty-one trillion, seven hundred seventy-one billion, two hundred sixty-five million, seven hundred fifty-seven thousand, eleven".