102542133536522 has 4 divisors (see below), whose sum is σ = 153813200304786. Its totient is φ = 51271066768260.

The previous prime is 102542133536519. The next prime is 102542133536543. The reversal of 102542133536522 is 225635331245201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 101750978434561 + 791155101961 = 10087169^2 + 889469^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25635533384129 + ... + 25635533384132.

Almost surely, 2^{102542133536522} is an apocalyptic number.

102542133536522 is a deficient number, since it is larger than the sum of its proper divisors (51271066768264).

102542133536522 is an equidigital number, since it uses as much as digits as its factorization.

102542133536522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51271066768263.

The product of its (nonzero) digits is 1296000, while the sum is 44.

The spelling of 102542133536522 in words is "one hundred two trillion, five hundred forty-two billion, one hundred thirty-three million, five hundred thirty-six thousand, five hundred twenty-two".