205161164062464 has 72 divisors (see below), whose sum is σ = 546030060774352. Its totient is φ = 68386782781440.

The previous prime is 205161164062427. The next prime is 205161164062471. The reversal of 205161164062464 is 464260461161502.

It is a super-2 number, since 2×205161164062464² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 313801572 + ... + 314454684.

Almost surely, 2^{205161164062464} is an apocalyptic number.

205161164062464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

205161164062464 is an abundant number, since it is smaller than the sum of its proper divisors (340868896711888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205161164062464 is an equidigital number, since it uses as much as digits as its factorization.

205161164062464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062153 (or 1062139 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 48.

The spelling of 205161164062464 in words is "two hundred five trillion, one hundred sixty-one billion, one hundred sixty-four million, sixty-two thousand, four hundred sixty-four".