102407717820 has 24 divisors (see below), whose sum is σ = 286741610064. Its totient is φ = 27308724736.

The previous prime is 102407717803. The next prime is 102407717821. The reversal of 102407717820 is 28717704201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102407717821) 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, 853397589 + ... + 853397708.

It is an arithmetic number, because the mean of its divisors is an integer number (11947567086).

Almost surely, 2^102407717820 is an apocalyptic number.

102407717820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102407717820 is an abundant number, since it is smaller than the sum of its proper divisors (184333892244).

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

102407717820 is a wasteful number, since it uses less digits than its factorization.

102407717820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706795309 (or 1706795307 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 39.

The spelling of 102407717820 in words is "one hundred two billion, four hundred seven million, seven hundred seventeen thousand, eight hundred twenty".