61651251665711 has 8 divisors (see below), whose sum is σ = 64338672644064. Its totient is φ = 58964408335360.

The previous prime is 61651251665671. The next prime is 61651251665719. The reversal of 61651251665711 is 11756615215616.

61651251665711 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 61651251665711 - 2¹⁴ = 61651251649327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61651251665719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144193886 + ... + 144620811.

It is an arithmetic number, because the mean of its divisors is an integer number (8042334080508).

Almost surely, 2^{61651251665711} is an apocalyptic number.

61651251665711 is a deficient number, since it is larger than the sum of its proper divisors (2687420978353).

61651251665711 is a wasteful number, since it uses less digits than its factorization.

61651251665711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288824001.

The product of its digits is 2268000, while the sum is 53.

The spelling of 61651251665711 in words is "sixty-one trillion, six hundred fifty-one billion, two hundred fifty-one million, six hundred sixty-five thousand, seven hundred eleven".