623036236442 has 4 divisors (see below), whose sum is σ = 934554354666. Its totient is φ = 311518118220.

The previous prime is 623036236421. The next prime is 623036236453. The reversal of 623036236442 is 244632630326.

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., 539653321321 + 83382915121 = 734611^2 + 288761^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 623036236442.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155759059109 + ... + 155759059112.

Almost surely, 2^623036236442 is an apocalyptic number.

623036236442 is a deficient number, since it is larger than the sum of its proper divisors (311518118224).

623036236442 is a wasteful number, since it uses less digits than its factorization.

623036236442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311518118223.

The product of its (nonzero) digits is 746496, while the sum is 41.

Adding to 623036236442 its reverse (244632630326), we get a palindrome (867668866768).

The spelling of 623036236442 in words is "six hundred twenty-three billion, thirty-six million, two hundred thirty-six thousand, four hundred forty-two".