30420756953 has 4 divisors (see below), whose sum is σ = 30425672100. Its totient is φ = 30415841808.

The previous prime is 30420756943. The next prime is 30420756959. The reversal of 30420756953 is 35965702403.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3651543184 + 26769213769 = 60428^2 + 163613^2 .

It is a cyclic number.

It is not a de Polignac number, because 30420756953 - 2⁶ = 30420756889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30420756959) 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, 2448278 + ... + 2460671.

It is an arithmetic number, because the mean of its divisors is an integer number (7606418025).

Almost surely, 2^30420756953 is an apocalyptic number.

It is an amenable number.

30420756953 is a deficient number, since it is larger than the sum of its proper divisors (4915147).

30420756953 is an equidigital number, since it uses as much as digits as its factorization.

30420756953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4915146.

The product of its (nonzero) digits is 680400, while the sum is 44.

The spelling of 30420756953 in words is "thirty billion, four hundred twenty million, seven hundred fifty-six thousand, nine hundred fifty-three".