68462833021 has 4 divisors (see below), whose sum is σ = 74686726944. Its totient is φ = 62238939100.

The previous prime is 68462833009. The next prime is 68462833031. The reversal of 68462833021 is 12033826486.

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 not a de Polignac number, because 68462833021 - 2²³ = 68454444413 is a prime.

It is a super-2 number, since 2×68462833021² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68462833031) 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, 3111946945 + ... + 3111946966.

It is an arithmetic number, because the mean of its divisors is an integer number (18671681736).

Almost surely, 2^68462833021 is an apocalyptic number.

It is an amenable number.

68462833021 is a deficient number, since it is larger than the sum of its proper divisors (6223893923).

68462833021 is a wasteful number, since it uses less digits than its factorization.

68462833021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6223893922.

The product of its (nonzero) digits is 331776, while the sum is 43.

The spelling of 68462833021 in words is "sixty-eight billion, four hundred sixty-two million, eight hundred thirty-three thousand, twenty-one".