612106879251 has 32 divisors (see below), whose sum is σ = 943559705088. Its totient is φ = 345727526400.

The previous prime is 612106879217. The next prime is 612106879259. The reversal of 612106879251 is 152978601216.

It is a happy number.

It is not a de Polignac number, because 612106879251 - 2²⁶ = 612039770387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 612106879251.

It is not an unprimeable number, because it can be changed into a prime (612106879259) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1014420 + ... + 1501086.

It is an arithmetic number, because the mean of its divisors is an integer number (29486240784).

Almost surely, 2^612106879251 is an apocalyptic number.

612106879251 is a deficient number, since it is larger than the sum of its proper divisors (331452825837).

612106879251 is a wasteful number, since it uses less digits than its factorization.

612106879251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487371.

The product of its (nonzero) digits is 362880, while the sum is 48.

The spelling of 612106879251 in words is "six hundred twelve billion, one hundred six million, eight hundred seventy-nine thousand, two hundred fifty-one".