612661522535 has 8 divisors (see below), whose sum is σ = 735451174896. Its totient is φ = 489957652800.

The previous prime is 612661522507. The next prime is 612661522549. The reversal of 612661522535 is 535225166216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 612661522535 - 2⁶ = 612661522471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21429941 + ... + 21458510.

It is an arithmetic number, because the mean of its divisors is an integer number (91931396862).

Almost surely, 2^612661522535 is an apocalyptic number.

612661522535 is a deficient number, since it is larger than the sum of its proper divisors (122789652361).

612661522535 is a wasteful number, since it uses less digits than its factorization.

612661522535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42891313.

The product of its digits is 648000, while the sum is 44.

The spelling of 612661522535 in words is "six hundred twelve billion, six hundred sixty-one million, five hundred twenty-two thousand, five hundred thirty-five".