420425970651 has 24 divisors (see below), whose sum is σ = 610462401120. Its totient is φ = 278816541696.

The previous prime is 420425970641. The next prime is 420425970661. The reversal of 420425970651 is 156079524024.

420425970651 is a `hidden beast` number, since 4 + 2 + 0 + 4 + 2 + 597 + 0 + 6 + 51 = 666.

It is an interprime number because it is at equal distance from previous prime (420425970641) and next prime (420425970661).

It is not a de Polignac number, because 420425970651 - 2⁵ = 420425970619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420425970597 and 420425970606.

It is not an unprimeable number, because it can be changed into a prime (420425970611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13943770 + ... + 13973888.

It is an arithmetic number, because the mean of its divisors is an integer number (25435933380).

Almost surely, 2^420425970651 is an apocalyptic number.

420425970651 is a deficient number, since it is larger than the sum of its proper divisors (190036430469).

420425970651 is a wasteful number, since it uses less digits than its factorization.

420425970651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38195 (or 38192 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 420425970651 in words is "four hundred twenty billion, four hundred twenty-five million, nine hundred seventy thousand, six hundred fifty-one".