420137221635 has 12 divisors (see below), whose sum is σ = 728237850912. Its totient is φ = 224073184848.

The previous prime is 420137221627. The next prime is 420137221643. The reversal of 420137221635 is 536122731024.

420137221635 is a `hidden beast` number, since 4 + 2 + 0 + 13 + 7 + 2 + 2 + 1 + 635 = 666.

It is an interprime number because it is at equal distance from previous prime (420137221627) and next prime (420137221643).

It is not a de Polignac number, because 420137221635 - 2³ = 420137221627 is a prime.

It is a super-2 number, since 2×420137221635² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 420137221635.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4668191307 + ... + 4668191396.

It is an arithmetic number, because the mean of its divisors is an integer number (60686487576).

Almost surely, 2^420137221635 is an apocalyptic number.

420137221635 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

420137221635 is a deficient number, since it is larger than the sum of its proper divisors (308100629277).

420137221635 is a wasteful number, since it uses less digits than its factorization.

420137221635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9336382714 (or 9336382711 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

Adding to 420137221635 its reverse (536122731024), we get a palindrome (956259952659).

The spelling of 420137221635 in words is "four hundred twenty billion, one hundred thirty-seven million, two hundred twenty-one thousand, six hundred thirty-five".