651535627879 has 4 divisors (see below), whose sum is σ = 652841311000. Its totient is φ = 650229944760.

The previous prime is 651535627783. The next prime is 651535627993. The reversal of 651535627879 is 978726535156.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 651535627879 - 2¹⁹ = 651535103591 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 651535627879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651535627079) 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, 652840812 + ... + 652841809.

It is an arithmetic number, because the mean of its divisors is an integer number (163210327750).

Almost surely, 2^651535627879 is an apocalyptic number.

651535627879 is a deficient number, since it is larger than the sum of its proper divisors (1305683121).

651535627879 is a wasteful number, since it uses less digits than its factorization.

651535627879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305683120.

The product of its digits is 95256000, while the sum is 64.

The spelling of 651535627879 in words is "six hundred fifty-one billion, five hundred thirty-five million, six hundred twenty-seven thousand, eight hundred seventy-nine".