17121209740 has 24 divisors (see below), whose sum is σ = 35960036112. Its totient is φ = 6847437120.

The previous prime is 17121209737. The next prime is 17121209761. The reversal of 17121209740 is 4790212171.

It is a super-2 number, since 2×17121209740² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 17121209696 and 17121209705.

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, 76170 + ... + 200110.

It is an arithmetic number, because the mean of its divisors is an integer number (1498334838).

Almost surely, 2^17121209740 is an apocalyptic number.

17121209740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17121209740 is an abundant number, since it is smaller than the sum of its proper divisors (18838826372).

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

17121209740 is a wasteful number, since it uses less digits than its factorization.

17121209740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130857 (or 130855 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 34.

The spelling of 17121209740 in words is "seventeen billion, one hundred twenty-one million, two hundred nine thousand, seven hundred forty".