645734053462 has 64 divisors (see below), whose sum is σ = 1049075712000. Its totient is φ = 297001216512.

The previous prime is 645734053457. The next prime is 645734053469. The reversal of 645734053462 is 264350437546.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645734053469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 173629239 + ... + 173632957.

It is an arithmetic number, because the mean of its divisors is an integer number (16391808000).

Almost surely, 2^645734053462 is an apocalyptic number.

645734053462 is a deficient number, since it is larger than the sum of its proper divisors (403341658538).

645734053462 is a wasteful number, since it uses less digits than its factorization.

645734053462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4453.

The product of its (nonzero) digits is 7257600, while the sum is 49.

The spelling of 645734053462 in words is "six hundred forty-five billion, seven hundred thirty-four million, fifty-three thousand, four hundred sixty-two".