645677351435 has 8 divisors (see below), whose sum is σ = 779566275600. Its totient is φ = 513372911904.

The previous prime is 645677351419. The next prime is 645677351447. The reversal of 645677351435 is 534153776546.

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

It is a cyclic number.

It is not a de Polignac number, because 645677351435 - 2⁴ = 645677351419 is a prime.

It is a super-2 number, since 2×645677351435² (a number of 24 digits) contains 22 as substring.

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, 396120260 + ... + 396121889.

It is an arithmetic number, because the mean of its divisors is an integer number (97445784450).

Almost surely, 2^645677351435 is an apocalyptic number.

645677351435 is a deficient number, since it is larger than the sum of its proper divisors (133888924165).

645677351435 is a wasteful number, since it uses less digits than its factorization.

645677351435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792242317.

The product of its digits is 31752000, while the sum is 56.

The spelling of 645677351435 in words is "six hundred forty-five billion, six hundred seventy-seven million, three hundred fifty-one thousand, four hundred thirty-five".