420773135521461 has 64 divisors (see below), whose sum is σ = 590081057617920. Its totient is φ = 266193314703360.

The previous prime is 420773135521433. The next prime is 420773135521469. The reversal of 420773135521461 is 164125531377024.

It is not a de Polignac number, because 420773135521461 - 2¹¹ = 420773135519413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420773135521469) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23468847945 + ... + 23468865873.

It is an arithmetic number, because the mean of its divisors is an integer number (9220016525280).

Almost surely, 2^{420773135521461} is an apocalyptic number.

It is an amenable number.

420773135521461 is a deficient number, since it is larger than the sum of its proper divisors (169307922096459).

420773135521461 is a wasteful number, since it uses less digits than its factorization.

420773135521461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23466.

The product of its (nonzero) digits is 4233600, while the sum is 51.

Adding to 420773135521461 its reverse (164125531377024), we get a palindrome (584898666898485).

The spelling of 420773135521461 in words is "four hundred twenty trillion, seven hundred seventy-three billion, one hundred thirty-five million, five hundred twenty-one thousand, four hundred sixty-one".