840477940633 has 4 divisors (see below), whose sum is σ = 841054006480. Its totient is φ = 839901874788.

The previous prime is 840477940559. The next prime is 840477940661. The reversal of 840477940633 is 336049774048.

840477940633 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-840477940633 is a prime.

It is a super-3 number, since 3×840477940633³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (840477940693) 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, 288030735 + ... + 288033652.

It is an arithmetic number, because the mean of its divisors is an integer number (210263501620).

Almost surely, 2^840477940633 is an apocalyptic number.

It is an amenable number.

840477940633 is a deficient number, since it is larger than the sum of its proper divisors (576065847).

840477940633 is a wasteful number, since it uses less digits than its factorization.

840477940633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576065846.

The product of its (nonzero) digits is 12192768, while the sum is 55.

The spelling of 840477940633 in words is "eight hundred forty billion, four hundred seventy-seven million, nine hundred forty thousand, six hundred thirty-three".