420468460648 has 8 divisors (see below), whose sum is σ = 788378363730. Its totient is φ = 210234230320.

The previous prime is 420468460619. The next prime is 420468460649. The reversal of 420468460648 is 846064864024.

It can be written as a sum of positive squares in only one way, i.e., 417416782084 + 3051678564 = 646078^2 + 55242^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 420468460595 and 420468460604.

It is not an unprimeable number, because it can be changed into a prime (420468460649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26279278783 + ... + 26279278798.

Almost surely, 2^420468460648 is an apocalyptic number.

It is an amenable number.

420468460648 is a deficient number, since it is larger than the sum of its proper divisors (367909903082).

420468460648 is a wasteful number, since it uses less digits than its factorization.

420468460648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52558557587 (or 52558557583 counting only the distinct ones).

The product of its (nonzero) digits is 7077888, while the sum is 52.

The spelling of 420468460648 in words is "four hundred twenty billion, four hundred sixty-eight million, four hundred sixty thousand, six hundred forty-eight".