651454454157 has 8 divisors (see below), whose sum is σ = 935421780384. Its totient is φ = 400895048688.

The previous prime is 651454454117. The next prime is 651454454173. The reversal of 651454454157 is 751454454156.

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

It is not a de Polignac number, because 651454454157 - 2²² = 651450259853 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651454454117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8351980143 + ... + 8351980220.

It is an arithmetic number, because the mean of its divisors is an integer number (116927722548).

Almost surely, 2^651454454157 is an apocalyptic number.

It is an amenable number.

651454454157 is a deficient number, since it is larger than the sum of its proper divisors (283967326227).

651454454157 is a wasteful number, since it uses less digits than its factorization.

651454454157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16703960379.

The product of its digits is 6720000, while the sum is 51.

Subtracting 651454454157 from its reverse (751454454156), we obtain a palindrome (99999999999).

The spelling of 651454454157 in words is "six hundred fifty-one billion, four hundred fifty-four million, four hundred fifty-four thousand, one hundred fifty-seven".