645112645454 has 16 divisors (see below), whose sum is σ = 970930858128. Its totient is φ = 321469264512.

The previous prime is 645112645427. The next prime is 645112645477. The reversal of 645112645454 is 454546211546.

It is a super-2 number, since 2×645112645454² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 645112645399 and 645112645408.

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, 5847734 + ... + 5957030.

It is an arithmetic number, because the mean of its divisors is an integer number (60683178633).

Almost surely, 2^645112645454 is an apocalyptic number.

645112645454 is a deficient number, since it is larger than the sum of its proper divisors (325818212674).

645112645454 is a wasteful number, since it uses less digits than its factorization.

645112645454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119219.

The product of its digits is 2304000, while the sum is 47.

The spelling of 645112645454 in words is "six hundred forty-five billion, one hundred twelve million, six hundred forty-five thousand, four hundred fifty-four".