23402515233442 has 4 divisors (see below), whose sum is σ = 35103772850166. Its totient is φ = 11701257616720.

The previous prime is 23402515233437. The next prime is 23402515233443. The reversal of 23402515233442 is 24433251520432.

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., 20285916912121 + 3116598321321 = 4503989^2 + 1765389^2 .

It is a junction number, because it is equal to n+sod(n) for n = 23402515233395 and 23402515233404.

It is not an unprimeable number, because it can be changed into a prime (23402515233443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5850628808359 + ... + 5850628808362.

Almost surely, 2^{23402515233442} is an apocalyptic number.

23402515233442 is a deficient number, since it is larger than the sum of its proper divisors (11701257616724).

23402515233442 is a wasteful number, since it uses less digits than its factorization.

23402515233442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11701257616723.

The product of its (nonzero) digits is 691200, while the sum is 40.

Adding to 23402515233442 its reverse (24433251520432), we get a palindrome (47835766753874).

The spelling of 23402515233442 in words is "twenty-three trillion, four hundred two billion, five hundred fifteen million, two hundred thirty-three thousand, four hundred forty-two".