420454577654 has 4 divisors (see below), whose sum is σ = 630681866484. Its totient is φ = 210227288826.

The previous prime is 420454577651. The next prime is 420454577687. The reversal of 420454577654 is 456775454024.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×420454577654² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 420454577596 and 420454577605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420454577651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105113644412 + ... + 105113644415.

It is an arithmetic number, because the mean of its divisors is an integer number (157670466621).

Almost surely, 2^420454577654 is an apocalyptic number.

420454577654 is a deficient number, since it is larger than the sum of its proper divisors (210227288830).

420454577654 is a wasteful number, since it uses less digits than its factorization.

420454577654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210227288829.

The product of its (nonzero) digits is 18816000, while the sum is 53.

The spelling of 420454577654 in words is "four hundred twenty billion, four hundred fifty-four million, five hundred seventy-seven thousand, six hundred fifty-four".