420005969631 has 16 divisors (see below), whose sum is σ = 654980070400. Its totient is φ = 265266927864.

The previous prime is 420005969611. The next prime is 420005969651. The reversal of 420005969631 is 136969500024.

420005969631 is a `hidden beast` number, since 4 + 2 + 0 + 0 + 0 + 5 + 9 + 6 + 9 + 631 = 666.

It is an interprime number because it is at equal distance from previous prime (420005969611) and next prime (420005969651).

It is not a de Polignac number, because 420005969631 - 2⁷ = 420005969503 is a prime.

It is a super-2 number, since 2×420005969631² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420005969611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 409362031 + ... + 409363056.

It is an arithmetic number, because the mean of its divisors is an integer number (40936254400).

Almost surely, 2^420005969631 is an apocalyptic number.

420005969631 is a deficient number, since it is larger than the sum of its proper divisors (234974100769).

420005969631 is a wasteful number, since it uses less digits than its factorization.

420005969631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818725115 (or 818725109 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The spelling of 420005969631 in words is "four hundred twenty billion, five million, nine hundred sixty-nine thousand, six hundred thirty-one".