4656421951 has 4 divisors (see below), whose sum is σ = 4656975552. Its totient is φ = 4655868352.

The previous prime is 4656421949. The next prime is 4656421961. The reversal of 4656421951 is 1591246564.

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

It is a cyclic number.

It is not a de Polignac number, because 4656421951 - 2¹ = 4656421949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4656421898 and 4656421907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4656421961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263986 + ... + 281071.

It is an arithmetic number, because the mean of its divisors is an integer number (1164243888).

Almost surely, 2^4656421951 is an apocalyptic number.

4656421951 is a deficient number, since it is larger than the sum of its proper divisors (553601).

4656421951 is an equidigital number, since it uses as much as digits as its factorization.

4656421951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553600.

The product of its digits is 259200, while the sum is 43.

The square root of 4656421951 is about 68237.9802675900. The cubic root of 4656421951 is about 1669.8755630564.

The spelling of 4656421951 in words is "four billion, six hundred fifty-six million, four hundred twenty-one thousand, nine hundred fifty-one".