681461796007 has 4 divisors (see below), whose sum is σ = 683360018640. Its totient is φ = 679563573376.

The previous prime is 681461795999. The next prime is 681461796013. The reversal of 681461796007 is 700697164186.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 700697164186 = 2 ⋅350348582093.

It is a cyclic number.

It is not a de Polignac number, because 681461796007 - 2³ = 681461795999 is a prime.

It is a super-2 number, since 2×681461796007² (a number of 24 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 (681461796607) 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, 949110778 + ... + 949111495.

It is an arithmetic number, because the mean of its divisors is an integer number (170840004660).

Almost surely, 2^681461796007 is an apocalyptic number.

681461796007 is a deficient number, since it is larger than the sum of its proper divisors (1898222633).

681461796007 is a wasteful number, since it uses less digits than its factorization.

681461796007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1898222632.

The product of its (nonzero) digits is 3048192, while the sum is 55.

The spelling of 681461796007 in words is "six hundred eighty-one billion, four hundred sixty-one million, seven hundred ninety-six thousand, seven".