102355738420 has 24 divisors (see below), whose sum is σ = 231481439784. Its totient is φ = 37792887936.

The previous prime is 102355738417. The next prime is 102355738421. The reversal of 102355738420 is 24837553201.

It can be written as a sum of positive squares in 4 ways, for example, as 10204636324 + 92151102096 = 101018^2 + 303564^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102355738421) 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, 196837699 + ... + 196838218.

It is an arithmetic number, because the mean of its divisors is an integer number (9645059991).

Almost surely, 2^102355738420 is an apocalyptic number.

102355738420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102355738420 is an abundant number, since it is smaller than the sum of its proper divisors (129125701364).

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

102355738420 is a wasteful number, since it uses less digits than its factorization.

102355738420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393675939 (or 393675937 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 102355738420 in words is "one hundred two billion, three hundred fifty-five million, seven hundred thirty-eight thousand, four hundred twenty".