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30620160451 = 132123179531
BaseRepresentation
bin11100100001000110…
…101001000111000011
32221000222020022120201
4130201012221013003
51000202230113301
622022224150031
72132540032546
oct344106510703
987028208521
1030620160451
1111a93311831
125b26768317
132b6c9cc14a
1416a695c85d
15be32ca201
hex7211a91c3

30620160451 has 4 divisors (see below), whose sum is σ = 30643341304. Its totient is φ = 30596979600.

The previous prime is 30620160359. The next prime is 30620160463. The reversal of 30620160451 is 15406102603.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15406102603 = 79195013957.

It is a cyclic number.

It is not a de Polignac number, because 30620160451 - 29 = 30620159939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30620160491) 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, 11588445 + ... + 11591086.

It is an arithmetic number, because the mean of its divisors is an integer number (7660835326).

Almost surely, 230620160451 is an apocalyptic number.

30620160451 is a deficient number, since it is larger than the sum of its proper divisors (23180853).

30620160451 is a wasteful number, since it uses less digits than its factorization.

30620160451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23180852.

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 30620160451 in words is "thirty billion, six hundred twenty million, one hundred sixty thousand, four hundred fifty-one".

Divisors: 1 1321 23179531 30620160451