102505011434 has 32 divisors (see below), whose sum is σ = 177377655936. Its totient is φ = 43518720960.

The previous prime is 102505011431. The next prime is 102505011437. The reversal of 102505011434 is 434110505201.

It is an interprime number because it is at equal distance from previous prime (102505011431) and next prime (102505011437).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102505011431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 657092 + ... + 797984.

It is an arithmetic number, because the mean of its divisors is an integer number (5543051748).

Almost surely, 2^102505011434 is an apocalyptic number.

102505011434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

102505011434 is a deficient number, since it is larger than the sum of its proper divisors (74872644502).

102505011434 is a wasteful number, since it uses less digits than its factorization.

102505011434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141390.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 102505011434 its reverse (434110505201), we get a palindrome (536615516635).

The spelling of 102505011434 in words is "one hundred two billion, five hundred five million, eleven thousand, four hundred thirty-four".