61155571611705 has 16 divisors (see below), whose sum is σ = 98434836226944. Its totient is φ = 32420997643520.

The previous prime is 61155571611697. The next prime is 61155571611731. The reversal of 61155571611705 is 50711617555116.

It is not a de Polignac number, because 61155571611705 - 2³ = 61155571611697 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12206698416 + ... + 12206703425.

It is an arithmetic number, because the mean of its divisors is an integer number (6152177264184).

Almost surely, 2^{61155571611705} is an apocalyptic number.

It is an amenable number.

61155571611705 is a deficient number, since it is larger than the sum of its proper divisors (37279264615239).

61155571611705 is a wasteful number, since it uses less digits than its factorization.

61155571611705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24413402016.

The product of its (nonzero) digits is 1102500, while the sum is 51.

The spelling of 61155571611705 in words is "sixty-one trillion, one hundred fifty-five billion, five hundred seventy-one million, six hundred eleven thousand, seven hundred five".