61354808849709 has 8 divisors (see below), whose sum is σ = 90896013110720. Its totient is φ = 40903205899788.

The previous prime is 61354808849669. The next prime is 61354808849729. The reversal of 61354808849709 is 90794880845316.

61354808849709 is a `hidden beast` number, since 6 + 1 + 3 + 54 + 8 + 0 + 88 + 497 + 0 + 9 = 666.

It is not a de Polignac number, because 61354808849709 - 2⁹ = 61354808849197 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 (61354808849729) 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, 1136200163857 + ... + 1136200163910.

It is an arithmetic number, because the mean of its divisors is an integer number (11362001638840).

Almost surely, 2^{61354808849709} is an apocalyptic number.

It is an amenable number.

61354808849709 is a deficient number, since it is larger than the sum of its proper divisors (29541204261011).

61354808849709 is a wasteful number, since it uses less digits than its factorization.

61354808849709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2272400327776 (or 2272400327770 counting only the distinct ones).

The product of its (nonzero) digits is 418037760, while the sum is 72.

The spelling of 61354808849709 in words is "sixty-one trillion, three hundred fifty-four billion, eight hundred eight million, eight hundred forty-nine thousand, seven hundred nine".