645613514354 has 12 divisors (see below), whose sum is σ = 1012356164526. Its totient is φ = 308771680272.

The previous prime is 645613514311. The next prime is 645613514417. The reversal of 645613514354 is 453415316546.

It can be written as a sum of positive squares in only one way, i.e., 570890558329 + 74722956025 = 755573^2 + 273355^2 .

It is a junction number, because it is equal to n+sod(n) for n = 645613514299 and 645613514308.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 305109299 + ... + 305111414.

Almost surely, 2^645613514354 is an apocalyptic number.

645613514354 is a deficient number, since it is larger than the sum of its proper divisors (366742650172).

645613514354 is a wasteful number, since it uses less digits than its factorization.

645613514354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610220761 (or 610220738 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 47.

The spelling of 645613514354 in words is "six hundred forty-five billion, six hundred thirteen million, five hundred fourteen thousand, three hundred fifty-four".