645330015098 has 8 divisors (see below), whose sum is σ = 967998767508. Its totient is φ = 322663759264.

The previous prime is 645330015047. The next prime is 645330015119. The reversal of 645330015098 is 890510033546.

It can be written as a sum of positive squares in 2 ways, for example, as 595170589729 + 50159425369 = 771473^2 + 223963^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289640 + ... + 1172412.

Almost surely, 2^645330015098 is an apocalyptic number.

645330015098 is a deficient number, since it is larger than the sum of its proper divisors (322668752410).

645330015098 is a wasteful number, since it uses less digits than its factorization.

645330015098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248288.

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 645330015098 in words is "six hundred forty-five billion, three hundred thirty million, fifteen thousand, ninety-eight".