102516111420 has 72 divisors (see below), whose sum is σ = 293282777424. Its totient is φ = 26755943424.

The previous prime is 102516111413. The next prime is 102516111421. The reversal of 102516111420 is 24111615201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102516111421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 254197 + ... + 519276.

Almost surely, 2^102516111420 is an apocalyptic number.

102516111420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102516111420 is an abundant number, since it is smaller than the sum of its proper divisors (190766666004).

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

102516111420 is a wasteful number, since it uses less digits than its factorization.

102516111420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773579 (or 773530 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

Adding to 102516111420 its reverse (24111615201), we get a palindrome (126627726621).

The spelling of 102516111420 in words is "one hundred two billion, five hundred sixteen million, one hundred eleven thousand, four hundred twenty".