812629409951 has 16 divisors (see below), whose sum is σ = 841226927520. Its totient is φ = 784453662720.

The previous prime is 812629409941. The next prime is 812629409959. The reversal of 812629409951 is 159904926218.

It is a cyclic number.

It is not a de Polignac number, because 812629409951 - 2⁶ = 812629409887 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 (812629409959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19024520 + ... + 19067186.

It is an arithmetic number, because the mean of its divisors is an integer number (52576682970).

Almost surely, 2^812629409951 is an apocalyptic number.

812629409951 is a deficient number, since it is larger than the sum of its proper divisors (28597517569).

812629409951 is a wasteful number, since it uses less digits than its factorization.

812629409951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47594.

The product of its (nonzero) digits is 2799360, while the sum is 56.

The spelling of 812629409951 in words is "eight hundred twelve billion, six hundred twenty-nine million, four hundred nine thousand, nine hundred fifty-one".