610861250399 has 4 divisors (see below), whose sum is σ = 620875369320. Its totient is φ = 600847131480.

The previous prime is 610861250371. The next prime is 610861250453. The reversal of 610861250399 is 993052168016.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-610861250399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (610861250369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5007059369 + ... + 5007059490.

It is an arithmetic number, because the mean of its divisors is an integer number (155218842330).

Almost surely, 2^610861250399 is an apocalyptic number.

610861250399 is a deficient number, since it is larger than the sum of its proper divisors (10014118921).

610861250399 is a wasteful number, since it uses less digits than its factorization.

610861250399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10014118920.

The product of its (nonzero) digits is 699840, while the sum is 50.

The spelling of 610861250399 in words is "six hundred ten billion, eight hundred sixty-one million, two hundred fifty thousand, three hundred ninety-nine".