103418720656 has 20 divisors (see below), whose sum is σ = 200418212592. Its totient is φ = 51697891616.

The previous prime is 103418720651. The next prime is 103418720693. The reversal of 103418720656 is 656027814301.

It is a super-2 number, since 2×103418720656² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (103418720651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642166 + ... + 786901.

Almost surely, 2^103418720656 is an apocalyptic number.

103418720656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

103418720656 is a deficient number, since it is larger than the sum of its proper divisors (96999491936).

103418720656 is a wasteful number, since it uses less digits than its factorization.

103418720656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433598 (or 1433592 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 103418720656 in words is "one hundred three billion, four hundred eighteen million, seven hundred twenty thousand, six hundred fifty-six".