645611350415 has 8 divisors (see below), whose sum is σ = 784067761008. Its totient is φ = 510266320000.

The previous prime is 645611350343. The next prime is 645611350463. The reversal of 645611350415 is 514053116546.

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

It is not a de Polignac number, because 645611350415 - 2¹⁴ = 645611334031 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, 777844586 + ... + 777845415.

It is an arithmetic number, because the mean of its divisors is an integer number (98008470126).

Almost surely, 2^645611350415 is an apocalyptic number.

645611350415 is a deficient number, since it is larger than the sum of its proper divisors (138456410593).

645611350415 is a wasteful number, since it uses less digits than its factorization.

645611350415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555690089.

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 645611350415 in words is "six hundred forty-five billion, six hundred eleven million, three hundred fifty thousand, four hundred fifteen".