23516438002 has 4 divisors (see below), whose sum is σ = 35274657006. Its totient is φ = 11758219000.

The previous prime is 23516437991. The next prime is 23516438009. The reversal of 23516438002 is 20083461532.

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., 22308110881 + 1208327121 = 149359^2 + 34761^2 .

It is not an unprimeable number, because it can be changed into a prime (23516438009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5879109499 + ... + 5879109502.

Almost surely, 2^23516438002 is an apocalyptic number.

23516438002 is a deficient number, since it is larger than the sum of its proper divisors (11758219004).

23516438002 is a wasteful number, since it uses less digits than its factorization.

23516438002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11758219003.

The product of its (nonzero) digits is 34560, while the sum is 34.

Adding to 23516438002 its reverse (20083461532), we get a palindrome (43599899534).

The spelling of 23516438002 in words is "twenty-three billion, five hundred sixteen million, four hundred thirty-eight thousand, two".