83405804257654 has 16 divisors (see below), whose sum is σ = 133511097512448. Its totient is φ = 38940736770432.

The previous prime is 83405804257553. The next prime is 83405804257669. The reversal of 83405804257654 is 45675240850438.

It is a super-2 number, since 2×83405804257654² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 83405804257592 and 83405804257601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9657916509 + ... + 9657925144.

It is an arithmetic number, because the mean of its divisors is an integer number (8344443594528).

Almost surely, 2^{83405804257654} is an apocalyptic number.

83405804257654 is a deficient number, since it is larger than the sum of its proper divisors (50105293254794).

83405804257654 is a wasteful number, since it uses less digits than its factorization.

83405804257654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19315841799.

The product of its (nonzero) digits is 129024000, while the sum is 61.

The spelling of 83405804257654 in words is "eighty-three trillion, four hundred five billion, eight hundred four million, two hundred fifty-seven thousand, six hundred fifty-four".