645152041151340 has 48 divisors (see below), whose sum is σ = 1806427206769920. Its totient is φ = 172040402255040.

The previous prime is 645152041151333. The next prime is 645152041151369. The reversal of 645152041151340 is 43151140251546.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 645152041151292 and 645152041151301.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83099475 + ... + 90530805.

It is an arithmetic number, because the mean of its divisors is an integer number (37633900141040).

Almost surely, 2^{645152041151340} is an apocalyptic number.

645152041151340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

645152041151340 is an abundant number, since it is smaller than the sum of its proper divisors (1161275165618580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

645152041151340 is a wasteful number, since it uses less digits than its factorization.

645152041151340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8878262 (or 8878260 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 42.

The spelling of 645152041151340 in words is "six hundred forty-five trillion, one hundred fifty-two billion, forty-one million, one hundred fifty-one thousand, three hundred forty".