23578401403 has 2 divisors, whose sum is σ = 23578401404. Its totient is φ = 23578401402.

The previous prime is 23578401359. The next prime is 23578401437. The reversal of 23578401403 is 30410487532.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23578401403 is a prime.

It is not a weakly prime, because it can be changed into another prime (23578401463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11789200701 + 11789200702.

It is an arithmetic number, because the mean of its divisors is an integer number (11789200702).

Almost surely, 2^23578401403 is an apocalyptic number.

23578401403 is a deficient number, since it is larger than the sum of its proper divisors (1).

23578401403 is an equidigital number, since it uses as much as digits as its factorization.

23578401403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 37.

Adding to 23578401403 its reverse (30410487532), we get a palindrome (53988888935).

The spelling of 23578401403 in words is "twenty-three billion, five hundred seventy-eight million, four hundred one thousand, four hundred three".