102240115513 has 2 divisors, whose sum is σ = 102240115514. Its totient is φ = 102240115512.

The previous prime is 102240115511. The next prime is 102240115561. The reversal of 102240115513 is 315511042201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100268489104 + 1971626409 = 316652^2 + 44403^2 .

It is a cyclic number.

It is not a de Polignac number, because 102240115513 - 2¹ = 102240115511 is a prime.

It is a super-2 number, since 2×102240115513² (a number of 23 digits) contains 22 as substring.

Together with 102240115511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (102240115511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51120057756 + 51120057757.

It is an arithmetic number, because the mean of its divisors is an integer number (51120057757).

Almost surely, 2^102240115513 is an apocalyptic number.

It is an amenable number.

102240115513 is a deficient number, since it is larger than the sum of its proper divisors (1).

102240115513 is an equidigital number, since it uses as much as digits as its factorization.

102240115513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 102240115513 its reverse (315511042201), we get a palindrome (417751157714).

The spelling of 102240115513 in words is "one hundred two billion, two hundred forty million, one hundred fifteen thousand, five hundred thirteen".