645214451054 has 8 divisors (see below), whose sum is σ = 968336754960. Its totient is φ = 322435532736.

The previous prime is 645214451039. The next prime is 645214451081. The reversal of 645214451054 is 450154412546.

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

It is a congruent 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, 85841699 + ... + 85849214.

It is an arithmetic number, because the mean of its divisors is an integer number (121042094370).

Almost surely, 2^645214451054 is an apocalyptic number.

645214451054 is a deficient number, since it is larger than the sum of its proper divisors (323122303906).

645214451054 is a wasteful number, since it uses less digits than its factorization.

645214451054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171692794.

The product of its (nonzero) digits is 384000, while the sum is 41.

The spelling of 645214451054 in words is "six hundred forty-five billion, two hundred fourteen million, four hundred fifty-one thousand, fifty-four".