612315065525621 has 8 divisors (see below), whose sum is σ = 649380987492480. Its totient is φ = 575365520081088.

The previous prime is 612315065525593. The next prime is 612315065525651. The reversal of 612315065525621 is 126525560513216.

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

It is a cyclic number.

It is not a de Polignac number, because 612315065525621 - 2⁶ = 612315065525557 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 612315065525621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612315065525651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29094119741 + ... + 29094140786.

It is an arithmetic number, because the mean of its divisors is an integer number (81172623436560).

Almost surely, 2^{612315065525621} is an apocalyptic number.

It is an amenable number.

612315065525621 is a deficient number, since it is larger than the sum of its proper divisors (37065921966859).

612315065525621 is a wasteful number, since it uses less digits than its factorization.

612315065525621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58188261163.

The product of its (nonzero) digits is 3240000, while the sum is 50.

The spelling of 612315065525621 in words is "six hundred twelve trillion, three hundred fifteen billion, sixty-five million, five hundred twenty-five thousand, six hundred twenty-one".