45454856857 has 2 divisors, whose sum is σ = 45454856858. Its totient is φ = 45454856856.

The previous prime is 45454856827. The next prime is 45454856869. The reversal of 45454856857 is 75865845454.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30791826576 + 14663030281 = 175476^2 + 121091^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45454856857 is a prime.

It is a super-2 number, since 2×45454856857² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45454856795 and 45454856804.

It is not a weakly prime, because it can be changed into another prime (45454856827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22727428428 + 22727428429.

It is an arithmetic number, because the mean of its divisors is an integer number (22727428429).

Almost surely, 2^45454856857 is an apocalyptic number.

It is an amenable number.

45454856857 is a deficient number, since it is larger than the sum of its proper divisors (1).

45454856857 is an equidigital number, since it uses as much as digits as its factorization.

45454856857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107520000, while the sum is 61.

The spelling of 45454856857 in words is "forty-five billion, four hundred fifty-four million, eight hundred fifty-six thousand, eight hundred fifty-seven".